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Gustav Bernroider
Neural Correlates of
                       Dept Organismic Biology, Neurosignaling Unit,
Higher Level Brain     University of Salzburg, Austria
Functions
Quantum Properties In Ion Channel Proteins , Segregation and Perception

experience is the basic reality




                                  Or grandma might be observing this pattern
Quantum Properties In Ion Channel Proteins , Segregation and Perception

experience is the basic reality




                                              As other persons are attending –
                                              Grandma‘s real oberservations are
                                              reported – she sends out a copy of her
                                              experience
Quantum Properties In Ion Channel Proteins , Segregation and Perception

experience is the basic reality


                                                      As even more persons
                                                      deal with grandma‘s report,
                                                      an agreement emerges about
                                                      what grandma‘ has seen
                                                      a physical theory….
Quantum Properties In Ion Channel Proteins , Segregation and Perception

experience is the basic reality



                                                  and what was
                                                  originally a copy of grandma‘s
                                                  experience is now considered
                                                  a reality and
                                                  Grandma‘s experience is the
                                                  (subjective) copy of it …………
Quantum Properties In Ion Channel Proteins , Segregation and Perception

experience is the basic reality



                                                  And the difference of grandma‘s
                                                  copy from the consensus ‚reality‘
                                                  Is called a ‚sensory illusion‘
Quantum Properties In Ion Channel Proteins , Segregation and Perception

experience is the basic reality




         First:      subjective experience = is real

         Splitting: with an another person added , a copy of this
                     experience is sent to the ‚world outside‘

         Inversion: as ‚consensus‘ emerges among the community
                    the copy ‚outside‘ becomes the
                   ‚real world‘ and the experience becomes the copy


                                              See , J. Stewart, 2001, Foundations of
                                              Science
Gustav Bernroider
Neural Correlates of
                       Dept Organismic Biology, Neurosignaling Unit,
Higher Level Brain     University of Salzburg, Austria
Functions



1) Experience

2) Construction

3) Perception
Gustav Bernroider
Neural Correlates of
                                      Dept Organismic Biology, Neurosignaling Unit,
Higher Level Brain                    University of Salzburg, Austria
Functions



1) Experience          phenomenal                    The brain ‚receives‘ or harvests
                                                     experience and consolidates
                                                     this experience
2) Construction         physical
                                                               Conscious perceptive
                       phenomenal &
3) Perception                                                  transition (CPT)
                       physical

                                                     into a maintainance or
                                                     working memory
Gustav Bernroider
Neural Correlates of
                                    Dept Organismic Biology, Neurosignaling Unit,
Higher Level Brain                  University of Salzburg, Austria
Functions



1) Experience          phenomenal


2) Construction         physical             Quantum - Classical (‚real‘ physics)
                                             transition
3) Perception          phenomenal
                       physical
Neural Correlates of
Higher Level Brain
Functions

                       Quantum physics as a conceptual
                       science, describes the phenomenal,
1) Experience          the ontology of the universe by
                       a concept:
2) Construction         (r1 , r2, …..;t) :

3) Perception          only through observation (measurement)
                       emerges physical reality.
Neural Correlates of
Higher Level Brain
Functions


         physics       psychobiology




                             I
Neural Correlates of
Higher Level Brain
Functions


         physics                                    psychobiology
                              A basic ontological
                              difference emerges
                              between systems
                              and surroundings

                   A(O)                                O(A)     S( )


                   A :=   c
                                                     Change of O(A)
Neural Correlates of
Higher Level Brain
Functions


         physics                                    psychobiology
                              A basic ontological
                              difference emerges
                              between systems
                              and surroundings

                   A(O)                                O(A)     S( )


                   A :=   c
Neural Correlates of
Higher Level Brain
Functions


         physics                                    psychobiology
                              A basic ontological
                              difference emerges
                              between systems
                              and surroundings

                   A(O)                                O(A)     S( )


                   A :=   c     =     SA
Neural Correlates of
Higher Level Brain
Functions


         physics                                    psychobiology
                              A basic ontological
                              difference emerges
                              between systems
                              and surroundings

                   A(O)                                O(A)     S( )


                   A :=   c     =     SA                            E
Neural Correlates of
Higher Level Brain
Functions


         physics                                    psychobiology
                              A basic ontological
                              difference emerges
                              between systems
                              and surroundings

                   A(O)                                O(A)



                   A :=   c     =     SA                            E
Neural Correlates of
Higher Level Brain
Functions



1) Experience

2) Construction        How do these steps combine ?
                       What are the physical correlates ?
3) Perception
Neural Correlates of
Higher Level Brain
Functions


                                             Dimensional excess of space
1) Experience

2) Construction        Scaling transitions

3) Perception
Neural Correlates of
Higher Level Brain
Functions



1) Experience

2) Construction        Scaling transitions

3) Perception




                                                            Mandelbrot – or fractal sets


                                   Bernroider G. (2012) Common Grounds: The Role of Perception in Science. Eds.
                                   B. Zavidovique, G. Lo Bosco, Image In Action, 103-110, World Scientific.
Neural Correlates of
Higher Level Brain
Functions



1) Experience          Organization
                       spans
                       about 30 physical
2) Construction        action orders

3) Perception
Neural Correlates of
Higher Level Brain                            States and transitions
Functions                                     (Bernroider & Roy, 2005)




1) Experience

2) Construction
                       nano-scale                                 60 um
                   Filter domain        Membrane integrated       TRIFM image of single Ca channels
3) Perception      of ion channel       ion channel molecule      membrane patch
                                                                                           Cell signals
                       E.t = 10-34 Js                                                     E.t = 10-16 Js




                                                                           E. t = 10-4 Js
Neural Correlates of
Higher Level Brain                      States and transitions
Functions                               (Bernroider & Roy, 2005)




1) Experience

2) Construction

3) Perception




      AD   N.    for a brain with AD = 10 -15 this gives N = 1019 states
Neural Correlates of
Higher Level Brain     States and transitions
Functions              (Bernroider & Roy, 2005)




1) Experience
                                                  The oxygen-coordinated
                                                  alkali-ion cage
2) Construction                                   in the filter region
                                                  of a voltage gated
                                                  ion channel is the
3) Perception                                     basic computational
                                                  unit (Bernroider, Roý 2005)
Quantum Properties In Ion Channel Proteins , Segregation and Perception


Channel proteins provide the transition states between quantum and classical
signals

• filter ‚gating‘ = ion – oxygen                Intra-molecular transitions:
  coordination states change:                   within one molecule (e.g KcsA
                                                         ion channel)
   characteristic time: 10-12 sec
   Action = E.t = 1kT . 10-12
   = 4.10-21J . 10-12 s = 10-33 Js                                     filter

                                                                        cavity
                                               Voltage
                                               sensor

                                                                      pore gate
Ion channel proteins are the quantum-classical transition devices:



• filter ‚gating‘ = ion – oxygen          Intra-molecular transitions:
  coordination states change:             within one molecule (e.g K cA
                                                   ion channel)
   characteristic time: 10-12 sec
   Action = E.t = 1kT . 10-12
   = 4.10-21J . 10-12 s = 10-33 Js                                filter

                                                                  cavity
• pore domain gating‘ – constriction     Voltage
  gate transitions (classical)           sensor

   characteristic time: 10 -3 sec                               pore gate
   Action = E.t = 10-16 Js

                                       Coherence dynamics couples the
                                       filter states with the pore gate state
Side view                Top view




ion channel protein           and             a quadrupole ion trap
        Carbonyl Oxygen groups act like quadrupole rings in an ion-
                              trap device
Quantum Properties In Ion Channel Proteins , Segregation and Perception




       QM: effects in the filter region of ion channels:
       oscillatory coherences, particle waves,
       energy transfer and cooling




A quantum-classical transition between
QM ion-oxygen states and filter gating states
Neural Correlates of
Higher Level Brain
Functions              The environment of ions changes:
                       hydrated ions in watery solution become
                       dehydrated and the protein ‚takes over‘
                       the role of an environment.
Constructing the
environment
Quantum Properties In Ion Channel Proteins , Segregation and Perception




          Summhammer J., Salari V., Bernroider G. A quantum-mechanical description of
                    ion motion within the confining potentials of voltage gated ion
                    channels. Journal of Integrative Neuroscience (JIN), Imperial college
                    Press, (2012) in print
Quantum Properties In Ion Channel Proteins , Segregation and Perception
Quantum Properties In Ion Channel Proteins




At particular oscillation frequencies (450 GHz) the kinetic energy of the
Ion is given off to the filter carbonyls – classicality emerges –
The kinetic energy minima for oscillation frequencies are different for
different ion species ( explains filter selectivity for ions*)

                                                        Cooling in proteins




                                        * Summhammer J., Salari V., Bernroider G. A quantum-mechanical
                                        description of ion motion within the confining potentials of voltage
                                        gated ion channels. Journal of Integrative Neuroscience (JIN), Imperial
                                        college Press, (2012) in print
Action potentials are the macroscopical
entanglement witnesses of quantum ion states in channel proteins

                                 Properties:
              a) high resolution shapes (resolved into msec)
       (action potential initiation (API), onset potential variability,
                         spike after potential -SAP)
                       b) Low time resolutions (sec)
             i) rates (API/sec) and ii) interspike intervalls ( ti)



                         number of APs /s




                                                           ti
                           API                   SAP

                                       OPV
Introducing quantum correlations for activiation dynamcis
In the HH equation
                            • |ψ = a0 |0 + a1 |1 + a2 |2 + a3 |3
A semi quantum-classical version of the
                     HH equation of motion

• a) classical version        (no
  entanglement, = 0)



• b) maximum positive quantum
  entanglement ( = 1)



• c) negative quantum entangled
  ‚m gates‘ ( = -0.5)




                                    voltage pulse   phase plot
Neural Correlates of
Higher Level Brain
Functions



1) Experience

2) Construction

3) Perception
Neural Correlates of
Higher Level Brain
Functions



1) Experience
                       Large brains have many cells
2) Construction

3) Perception
Connections in mm, from the Macaque visual system, Voggenhuber 2001




 32 synaptic distances from V1 …… FEF
Large brains have many cells


Cells are organized so that there receptive field properties (RF) change
along synaptic distances:




                1                  2               3
Large brains have many cells

Cells are organized so that there receptive field properties (RF) change
along synaptic distances:

There are ascending (A) and recurrent ( R) connections




           A    1                  2               3


                                            R
Large brains have many cells

Cells are organized so that there receptive field properties (RF) change
along synaptic distances:

There are ascending (A) and recurrent ( R) connections

There a local (micro) circuits and long range connections



                1                  2               3
Synpatic distances




                     Top-down processes are necessary
                     for conscious perception
Synpatic distances




                     Top-down processes are necessary
                     for conscious perception

  microcircuit
Predictive coding:
                                               Predictive coding and
a comparison between                           minimizing (Expectation – Observation)

bottom up and top-down
signaling



                                         (a)                   (b)                  (c)
                                                 lower level         higher level




Predictive coding – principle
lower level information e.g. direction in (a) converges
with higher level information (c) on an intermediate level (b).
From this intermediate level feed-forward (left to right arrows)
connections encode the information about the residual
discrepancy (insert) between lower and higher level codes.
If the (red) recurrent control is missing there is no
      ascending [ AR] and no c-perceptive state (CPS)




(a)                  (b)                  (c)
      lower level          higher level
Long range connections analysed by dynamic causal modelling
(DCM, Friston, 2003)




               IFG     If top down recurrent connections are impaired
                       from fronto-parietal cortex, subjects are in a
                       vegetative state (VS)

               STG     Dehaene et al, 2006
                       Friston group, 2011



               A1
Frontal Cortex : Damasio - Anatomie der Moral


Dorso-lateral
Pläne und Konzepte

                                                         Anterior-
                                                         Cingulate
                                                         Aufmerksam-
                                                         keit auf
                                                         eigene Ideen



                                                         Ventro-medial
                                                         Emotionelle Erf.
            Orbito-frontal: inhibiert ‚unpassende Aktionen‘ zugunsten
            von lang-zeitigem Vorteil
A model for conscious experience (sensation)




       Ascending signals                                    Recurrent signals




Receptor site   Thalamo-cortical

                                   Segregation level      Late stage frontal areas
A model for conscious experience (sensation)



       Ascending signals                                  Recurrent signals




Receptor site   Thalamo-cortical

                                   Segregation level      Late stage frontal areas
A model for conscious experience (sensation)
                                                     Working memory

                           Consicousness

                                                        Recurrent signals
       Ascending signals
                                                           attention




Receptor site   Thalamo-cortical

                                   Segregation level   Late stage frontal areas
Neural Correlates of
Higher Level Brain
Functions



1) Experience

2) Construction

3) Perception
Neural Correlates of
Higher Level Brain
Functions


         physics                                    psychobiology
                              A basic ontological
                              difference emerges
                              between systems
                              and surroundings

                   A(O)                                O(A)     S( )


                   A :=   c
                                                     Change of O(A)
Neural Correlates of
Higher Level Brain
Functions


         physics                                    psychobiology
                              A basic ontological
                              difference emerges
                              between systems
                              and surroundings

                   A(O)                                O(A)     S( )


                   A :=   c
Neural Correlates of
Higher Level Brain
Functions


         physics                                    psychobiology
                              A basic ontological
                              difference emerges
                              between systems
                              and surroundings

                   A(O)                                O(A)     S( )


                   A :=   c     =     SA
Neural Correlates of
Higher Level Brain
Functions


         physics                                    psychobiology
                              A basic ontological
                              difference emerges
                              between systems
                              and surroundings

                   A(O)                                O(A)     S( )


                   A :=   c     =     SA                            E
Neural Correlates of
Higher Level Brain
Functions


         physics                                    psychobiology
                              A basic ontological
                              difference emerges
                              between systems
                              and surroundings

                   A(O)                                O(A)



                   A :=   c     =     SA                            E
Neural Correlates of
Higher Level Brain
Functions




                       Molto grazie per vostra attenzione
Neural Correlates of
Higher Level Brain
Functions
Neural Correlates of
Higher Level Brain
Functions

From quantum to classical and back
again

States are physical
Transitions are phenomenal
Neural Correlates of
Higher Level Brain
Functions

From quantum to classical and back
again

States are physical
Transitions are phenomenal
Large brains have many cells
Receptive field maturation:

       a) volume = number of cells
       b) number of cells = number of ion channels
       c) number of cells is structured by synaptic distances
       d) synaptic distances are organized in a way to achieve
          between channel ion entanglement within the same
          receptive field property
       e) between ion channel entanglement = the physical
          correlate of a conscious perceptive state (CPS)
Connectivities
Cortical connections:

Long-range cortical connections:

         short-latency ERPs (mostly feed forward, e.g. 50 ms)
         long-latency ERPs (mediated by backward connections, > 200 ms)




  Short range connections (local, microcircuit architecture)
         neurons that share input – overlapping receptive fields
         decorrelated (asynchronous states) firing

         Ecker, et al. Science, 2010
         Renart , et al. , Science, 2010
Wang et al., 2010
Mensch                       Krähen

V2
The model: 'diffuse recurrent connectivities' and temporal coding




                                      (2) The mirror or lense metaphor                     (3) Temporal interspike coding:
                                      underlaying the present model:                       the signals time code is provided by
                                      Signals from the ASD cell (orange) can               the lengths of intervals between subsequent action-
                                      spread everywhere onto the neighbouring DTD -        potentials - (bar length for red (feedforward)
                                      however, the timing of signals is different within   amd blue (recurrecnt) signals). The 'coupling'
                                      shorter or longer path-length (moving clocks) -      zone where signals are temporally 'aligned' by
(1) Connectivity of a single modul:   so, at any instance of time presynaptic signals      dendritic delays at the target neurons
an axonal source domain (ASD) is      spread along shorter connections arrive somewhat     is shown by the black box.
projected onto a dendritic target     earlier at the DTD than signals travelling along     The model realizes 'timing' through complex
domain                                longer axon-patches. These differences are           vectorial simulations - where the 'amplitude' for
(DTD) and the recurrent ASD is        compensated by 'dendritic delay processing'          propagation is associated with a 'phase' (i.e. orientation
projected back onto the source DTD    ('coupling within the blue zone') and lead to        of a vector) that changes with time.
                                      'coincident' signal arrival at the source neurons
                                      DTD (dark box on the right side).
Iso-orientation maps from area 18 of visual cortex
        obtained from intrinsic opto-physiological mappings 5
                            B                                                                         C
    A                                                                                             Isoorientation maps in Cat‘s Area
                                                                                                  18:
                                                                                                  Regions with high metabolic activity in
                                                                                                  bright blue
                                                                                                  (Bonhoeffer T., Grinvald A. 1993)




                                                                                                      L

                                                                                                  A       P

                                                                                                      M




                        A
D                       Location within the cats visual cortex from where
                        activity maps were recorded5
                        B
                        3-dim arrangement of recorded maps relative to cortical layers.
                        The thickness of the optical layer is 50µm
                        C
                        Four iso-orientation maps generated through moving gratings
                        employing four different orientations (0°, 45°, 90°, 135°)
                        D
                        The resolution of the original picture is compared with the
                        resolution, that is used in the computational model. One pixel in the original
                        image corresponds to an extension of 17µm x 17µm. The digitized
                        image uses pixel size of 230µm x 200µm.
                        From estimations about neuronal densities, one pixel (17x17 µm) contains
                        about 0.7 neurons (Beaulieu C., Colonnier M. 1985). The present model
                        contains roughly 110 neurons for each resolved location.
Evolution of spike-tuning curves (a), single neuron spike trains (b) and signal-population vector length ©
 for different firing patterns of simulated neurons
                           3                                                                                 18

                                                                                                             16

                           2                                                                                 14

                                                                                                             12

                           1                                                                                 10

                                                                                                             8

                           0                                                                                 6

                                                                                                             4


  (a)                              0               time in secs
                                                                    1                                        2


                                                                            (a)                              0

                                                                                                                       0      time in secs       2



                                           (c)
                                                                                                                  (c)

 (b)                                                                        (b)
            1     regular, tonic firing                                                3     multiply bursting cell


                                                                                                        18

                                                                                                        16

                           12                                                                           14

                                                                                                        12
                           10
                                                                                                        10

                               8                                                                        8

                                                                                                        6
                               6
                                                                                                        4

                               4                                                                        2

  (a)                          2                                             (a)                        0



                               0                                                                                  0         time in secs     2
                                       0                                1
                                                     time in secs




                                                 (c)                                                                  (c)
(b)                                                                          (b)
        2       irregular, random spike train                                      4       post-inhibitory rebound spike trains
Local connectivities: columns in visual cortex

                       Rod recpetor cell
     Horizontal c
                        Bipolar cell

      Amacrine c        Retinal ganglion cell



                               Geniculate cells
                               of thalamus

                           Layer 4 cells

         A long



              R long
Correlations, Decorrelations, along synaptic
distances


Shared input                 E or I        c>0
Correlated input             E or I        c>0

Correlated input (E und E) und (I und I)    c>0
Correlated input (E und I)                  c<0
Energy transfer along the p-loop of the filter
 (Salari, Summhammer, Bernroider 2010)
                                 SINK                                                           SINK

                                                                                   6

                                                             H              O          5
          P-loop is                        G
                                                                                       4
      considered as a              Y
                                                                 N


       linear chain of                         G
                                                                     C                 3
        peptide units                                                                      Jn
                                       V                                               2
                                               T           ion
                                                                                       1
                                                            Each peptide unit is
         Energy coupling                                    considered as a unit
          between C=O                                         in a linear chain
          bonds and ion
 EC O, Na 2 3 eV 50 10 20 Joul
Bucher et al, Biophysical Chemistry, 124, 292-301, 2006.

                                                                                                       73

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Bernroider

  • 1. Gustav Bernroider Neural Correlates of Dept Organismic Biology, Neurosignaling Unit, Higher Level Brain University of Salzburg, Austria Functions
  • 2. Quantum Properties In Ion Channel Proteins , Segregation and Perception experience is the basic reality Or grandma might be observing this pattern
  • 3. Quantum Properties In Ion Channel Proteins , Segregation and Perception experience is the basic reality As other persons are attending – Grandma‘s real oberservations are reported – she sends out a copy of her experience
  • 4. Quantum Properties In Ion Channel Proteins , Segregation and Perception experience is the basic reality As even more persons deal with grandma‘s report, an agreement emerges about what grandma‘ has seen a physical theory….
  • 5. Quantum Properties In Ion Channel Proteins , Segregation and Perception experience is the basic reality and what was originally a copy of grandma‘s experience is now considered a reality and Grandma‘s experience is the (subjective) copy of it …………
  • 6. Quantum Properties In Ion Channel Proteins , Segregation and Perception experience is the basic reality And the difference of grandma‘s copy from the consensus ‚reality‘ Is called a ‚sensory illusion‘
  • 7. Quantum Properties In Ion Channel Proteins , Segregation and Perception experience is the basic reality First: subjective experience = is real Splitting: with an another person added , a copy of this experience is sent to the ‚world outside‘ Inversion: as ‚consensus‘ emerges among the community the copy ‚outside‘ becomes the ‚real world‘ and the experience becomes the copy See , J. Stewart, 2001, Foundations of Science
  • 8. Gustav Bernroider Neural Correlates of Dept Organismic Biology, Neurosignaling Unit, Higher Level Brain University of Salzburg, Austria Functions 1) Experience 2) Construction 3) Perception
  • 9. Gustav Bernroider Neural Correlates of Dept Organismic Biology, Neurosignaling Unit, Higher Level Brain University of Salzburg, Austria Functions 1) Experience phenomenal The brain ‚receives‘ or harvests experience and consolidates this experience 2) Construction physical Conscious perceptive phenomenal & 3) Perception transition (CPT) physical into a maintainance or working memory
  • 10. Gustav Bernroider Neural Correlates of Dept Organismic Biology, Neurosignaling Unit, Higher Level Brain University of Salzburg, Austria Functions 1) Experience phenomenal 2) Construction physical Quantum - Classical (‚real‘ physics) transition 3) Perception phenomenal physical
  • 11. Neural Correlates of Higher Level Brain Functions Quantum physics as a conceptual science, describes the phenomenal, 1) Experience the ontology of the universe by a concept: 2) Construction (r1 , r2, …..;t) : 3) Perception only through observation (measurement) emerges physical reality.
  • 12. Neural Correlates of Higher Level Brain Functions physics psychobiology I
  • 13. Neural Correlates of Higher Level Brain Functions physics psychobiology A basic ontological difference emerges between systems and surroundings A(O) O(A) S( ) A := c Change of O(A)
  • 14. Neural Correlates of Higher Level Brain Functions physics psychobiology A basic ontological difference emerges between systems and surroundings A(O) O(A) S( ) A := c
  • 15. Neural Correlates of Higher Level Brain Functions physics psychobiology A basic ontological difference emerges between systems and surroundings A(O) O(A) S( ) A := c = SA
  • 16. Neural Correlates of Higher Level Brain Functions physics psychobiology A basic ontological difference emerges between systems and surroundings A(O) O(A) S( ) A := c = SA E
  • 17. Neural Correlates of Higher Level Brain Functions physics psychobiology A basic ontological difference emerges between systems and surroundings A(O) O(A) A := c = SA E
  • 18. Neural Correlates of Higher Level Brain Functions 1) Experience 2) Construction How do these steps combine ? What are the physical correlates ? 3) Perception
  • 19. Neural Correlates of Higher Level Brain Functions Dimensional excess of space 1) Experience 2) Construction Scaling transitions 3) Perception
  • 20. Neural Correlates of Higher Level Brain Functions 1) Experience 2) Construction Scaling transitions 3) Perception Mandelbrot – or fractal sets Bernroider G. (2012) Common Grounds: The Role of Perception in Science. Eds. B. Zavidovique, G. Lo Bosco, Image In Action, 103-110, World Scientific.
  • 21. Neural Correlates of Higher Level Brain Functions 1) Experience Organization spans about 30 physical 2) Construction action orders 3) Perception
  • 22. Neural Correlates of Higher Level Brain States and transitions Functions (Bernroider & Roy, 2005) 1) Experience 2) Construction nano-scale 60 um Filter domain Membrane integrated TRIFM image of single Ca channels 3) Perception of ion channel ion channel molecule membrane patch Cell signals E.t = 10-34 Js E.t = 10-16 Js E. t = 10-4 Js
  • 23. Neural Correlates of Higher Level Brain States and transitions Functions (Bernroider & Roy, 2005) 1) Experience 2) Construction 3) Perception AD N. for a brain with AD = 10 -15 this gives N = 1019 states
  • 24. Neural Correlates of Higher Level Brain States and transitions Functions (Bernroider & Roy, 2005) 1) Experience The oxygen-coordinated alkali-ion cage 2) Construction in the filter region of a voltage gated ion channel is the 3) Perception basic computational unit (Bernroider, Roý 2005)
  • 25. Quantum Properties In Ion Channel Proteins , Segregation and Perception Channel proteins provide the transition states between quantum and classical signals • filter ‚gating‘ = ion – oxygen Intra-molecular transitions: coordination states change: within one molecule (e.g KcsA ion channel) characteristic time: 10-12 sec Action = E.t = 1kT . 10-12 = 4.10-21J . 10-12 s = 10-33 Js filter cavity Voltage sensor pore gate
  • 26. Ion channel proteins are the quantum-classical transition devices: • filter ‚gating‘ = ion – oxygen Intra-molecular transitions: coordination states change: within one molecule (e.g K cA ion channel) characteristic time: 10-12 sec Action = E.t = 1kT . 10-12 = 4.10-21J . 10-12 s = 10-33 Js filter cavity • pore domain gating‘ – constriction Voltage gate transitions (classical) sensor characteristic time: 10 -3 sec pore gate Action = E.t = 10-16 Js Coherence dynamics couples the filter states with the pore gate state
  • 27. Side view Top view ion channel protein and a quadrupole ion trap Carbonyl Oxygen groups act like quadrupole rings in an ion- trap device
  • 28. Quantum Properties In Ion Channel Proteins , Segregation and Perception QM: effects in the filter region of ion channels: oscillatory coherences, particle waves, energy transfer and cooling A quantum-classical transition between QM ion-oxygen states and filter gating states
  • 29. Neural Correlates of Higher Level Brain Functions The environment of ions changes: hydrated ions in watery solution become dehydrated and the protein ‚takes over‘ the role of an environment. Constructing the environment
  • 30. Quantum Properties In Ion Channel Proteins , Segregation and Perception Summhammer J., Salari V., Bernroider G. A quantum-mechanical description of ion motion within the confining potentials of voltage gated ion channels. Journal of Integrative Neuroscience (JIN), Imperial college Press, (2012) in print
  • 31. Quantum Properties In Ion Channel Proteins , Segregation and Perception
  • 32. Quantum Properties In Ion Channel Proteins At particular oscillation frequencies (450 GHz) the kinetic energy of the Ion is given off to the filter carbonyls – classicality emerges – The kinetic energy minima for oscillation frequencies are different for different ion species ( explains filter selectivity for ions*) Cooling in proteins * Summhammer J., Salari V., Bernroider G. A quantum-mechanical description of ion motion within the confining potentials of voltage gated ion channels. Journal of Integrative Neuroscience (JIN), Imperial college Press, (2012) in print
  • 33. Action potentials are the macroscopical entanglement witnesses of quantum ion states in channel proteins Properties: a) high resolution shapes (resolved into msec) (action potential initiation (API), onset potential variability, spike after potential -SAP) b) Low time resolutions (sec) i) rates (API/sec) and ii) interspike intervalls ( ti) number of APs /s ti API SAP OPV
  • 34. Introducing quantum correlations for activiation dynamcis In the HH equation • |ψ = a0 |0 + a1 |1 + a2 |2 + a3 |3
  • 35. A semi quantum-classical version of the HH equation of motion • a) classical version (no entanglement, = 0) • b) maximum positive quantum entanglement ( = 1) • c) negative quantum entangled ‚m gates‘ ( = -0.5) voltage pulse phase plot
  • 36. Neural Correlates of Higher Level Brain Functions 1) Experience 2) Construction 3) Perception
  • 37. Neural Correlates of Higher Level Brain Functions 1) Experience Large brains have many cells 2) Construction 3) Perception
  • 38. Connections in mm, from the Macaque visual system, Voggenhuber 2001 32 synaptic distances from V1 …… FEF
  • 39. Large brains have many cells Cells are organized so that there receptive field properties (RF) change along synaptic distances: 1 2 3
  • 40. Large brains have many cells Cells are organized so that there receptive field properties (RF) change along synaptic distances: There are ascending (A) and recurrent ( R) connections A 1 2 3 R
  • 41. Large brains have many cells Cells are organized so that there receptive field properties (RF) change along synaptic distances: There are ascending (A) and recurrent ( R) connections There a local (micro) circuits and long range connections 1 2 3
  • 42. Synpatic distances Top-down processes are necessary for conscious perception
  • 43. Synpatic distances Top-down processes are necessary for conscious perception microcircuit
  • 44. Predictive coding: Predictive coding and a comparison between minimizing (Expectation – Observation) bottom up and top-down signaling (a) (b) (c) lower level higher level Predictive coding – principle lower level information e.g. direction in (a) converges with higher level information (c) on an intermediate level (b). From this intermediate level feed-forward (left to right arrows) connections encode the information about the residual discrepancy (insert) between lower and higher level codes.
  • 45. If the (red) recurrent control is missing there is no ascending [ AR] and no c-perceptive state (CPS) (a) (b) (c) lower level higher level
  • 46. Long range connections analysed by dynamic causal modelling (DCM, Friston, 2003) IFG If top down recurrent connections are impaired from fronto-parietal cortex, subjects are in a vegetative state (VS) STG Dehaene et al, 2006 Friston group, 2011 A1
  • 47. Frontal Cortex : Damasio - Anatomie der Moral Dorso-lateral Pläne und Konzepte Anterior- Cingulate Aufmerksam- keit auf eigene Ideen Ventro-medial Emotionelle Erf. Orbito-frontal: inhibiert ‚unpassende Aktionen‘ zugunsten von lang-zeitigem Vorteil
  • 48. A model for conscious experience (sensation) Ascending signals Recurrent signals Receptor site Thalamo-cortical Segregation level Late stage frontal areas
  • 49. A model for conscious experience (sensation) Ascending signals Recurrent signals Receptor site Thalamo-cortical Segregation level Late stage frontal areas
  • 50. A model for conscious experience (sensation) Working memory Consicousness Recurrent signals Ascending signals attention Receptor site Thalamo-cortical Segregation level Late stage frontal areas
  • 51. Neural Correlates of Higher Level Brain Functions 1) Experience 2) Construction 3) Perception
  • 52. Neural Correlates of Higher Level Brain Functions physics psychobiology A basic ontological difference emerges between systems and surroundings A(O) O(A) S( ) A := c Change of O(A)
  • 53. Neural Correlates of Higher Level Brain Functions physics psychobiology A basic ontological difference emerges between systems and surroundings A(O) O(A) S( ) A := c
  • 54. Neural Correlates of Higher Level Brain Functions physics psychobiology A basic ontological difference emerges between systems and surroundings A(O) O(A) S( ) A := c = SA
  • 55. Neural Correlates of Higher Level Brain Functions physics psychobiology A basic ontological difference emerges between systems and surroundings A(O) O(A) S( ) A := c = SA E
  • 56. Neural Correlates of Higher Level Brain Functions physics psychobiology A basic ontological difference emerges between systems and surroundings A(O) O(A) A := c = SA E
  • 57. Neural Correlates of Higher Level Brain Functions Molto grazie per vostra attenzione
  • 58.
  • 59. Neural Correlates of Higher Level Brain Functions
  • 60. Neural Correlates of Higher Level Brain Functions From quantum to classical and back again States are physical Transitions are phenomenal
  • 61. Neural Correlates of Higher Level Brain Functions From quantum to classical and back again States are physical Transitions are phenomenal
  • 62.
  • 63. Large brains have many cells
  • 64. Receptive field maturation: a) volume = number of cells b) number of cells = number of ion channels c) number of cells is structured by synaptic distances d) synaptic distances are organized in a way to achieve between channel ion entanglement within the same receptive field property e) between ion channel entanglement = the physical correlate of a conscious perceptive state (CPS)
  • 66. Cortical connections: Long-range cortical connections: short-latency ERPs (mostly feed forward, e.g. 50 ms) long-latency ERPs (mediated by backward connections, > 200 ms) Short range connections (local, microcircuit architecture) neurons that share input – overlapping receptive fields decorrelated (asynchronous states) firing Ecker, et al. Science, 2010 Renart , et al. , Science, 2010
  • 67. Wang et al., 2010 Mensch Krähen V2
  • 68. The model: 'diffuse recurrent connectivities' and temporal coding (2) The mirror or lense metaphor (3) Temporal interspike coding: underlaying the present model: the signals time code is provided by Signals from the ASD cell (orange) can the lengths of intervals between subsequent action- spread everywhere onto the neighbouring DTD - potentials - (bar length for red (feedforward) however, the timing of signals is different within amd blue (recurrecnt) signals). The 'coupling' shorter or longer path-length (moving clocks) - zone where signals are temporally 'aligned' by (1) Connectivity of a single modul: so, at any instance of time presynaptic signals dendritic delays at the target neurons an axonal source domain (ASD) is spread along shorter connections arrive somewhat is shown by the black box. projected onto a dendritic target earlier at the DTD than signals travelling along The model realizes 'timing' through complex domain longer axon-patches. These differences are vectorial simulations - where the 'amplitude' for (DTD) and the recurrent ASD is compensated by 'dendritic delay processing' propagation is associated with a 'phase' (i.e. orientation projected back onto the source DTD ('coupling within the blue zone') and lead to of a vector) that changes with time. 'coincident' signal arrival at the source neurons DTD (dark box on the right side).
  • 69. Iso-orientation maps from area 18 of visual cortex obtained from intrinsic opto-physiological mappings 5 B C A Isoorientation maps in Cat‘s Area 18: Regions with high metabolic activity in bright blue (Bonhoeffer T., Grinvald A. 1993) L A P M A D Location within the cats visual cortex from where activity maps were recorded5 B 3-dim arrangement of recorded maps relative to cortical layers. The thickness of the optical layer is 50µm C Four iso-orientation maps generated through moving gratings employing four different orientations (0°, 45°, 90°, 135°) D The resolution of the original picture is compared with the resolution, that is used in the computational model. One pixel in the original image corresponds to an extension of 17µm x 17µm. The digitized image uses pixel size of 230µm x 200µm. From estimations about neuronal densities, one pixel (17x17 µm) contains about 0.7 neurons (Beaulieu C., Colonnier M. 1985). The present model contains roughly 110 neurons for each resolved location.
  • 70. Evolution of spike-tuning curves (a), single neuron spike trains (b) and signal-population vector length © for different firing patterns of simulated neurons 3 18 16 2 14 12 1 10 8 0 6 4 (a) 0 time in secs 1 2 (a) 0 0 time in secs 2 (c) (c) (b) (b) 1 regular, tonic firing 3 multiply bursting cell 18 16 12 14 12 10 10 8 8 6 6 4 4 2 (a) 2 (a) 0 0 0 time in secs 2 0 1 time in secs (c) (c) (b) (b) 2 irregular, random spike train 4 post-inhibitory rebound spike trains
  • 71. Local connectivities: columns in visual cortex Rod recpetor cell Horizontal c Bipolar cell Amacrine c Retinal ganglion cell Geniculate cells of thalamus Layer 4 cells A long R long
  • 72. Correlations, Decorrelations, along synaptic distances Shared input E or I c>0 Correlated input E or I c>0 Correlated input (E und E) und (I und I) c>0 Correlated input (E und I) c<0
  • 73. Energy transfer along the p-loop of the filter (Salari, Summhammer, Bernroider 2010) SINK SINK 6 H O 5 P-loop is G 4 considered as a Y N linear chain of G C 3 peptide units Jn V 2 T ion 1 Each peptide unit is Energy coupling considered as a unit between C=O in a linear chain bonds and ion EC O, Na 2 3 eV 50 10 20 Joul Bucher et al, Biophysical Chemistry, 124, 292-301, 2006. 73