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明晰夢を見たい話
筑波大学 情報学群 情報メディア創成学類 5年目(休学中)
鳥羽雄希 (TORIBA Yuki)
超音波を脳に当てて明晰夢を見たい
超音波を脳に当てて明晰夢を見たい
Neural Correlates of Dream Lucidity
Obtained from Contrasting Lucid versus
Non-Lucid REM Sleep: A Combined EEG/
fMRI Case Study
Sleep(2012)
Martin Dresler, Renate Wehrle et al.
dx.doi.org/10.5665/sleep.1974
明晰夢に特有な脳活動(特に楔前部)
後後前 前
前 後
左から
見た脳
右から
見た脳
真ん中
の断面
precuneus(楔前部)
cuneus(楔部)
parietal lobe(頭頂葉)
occipito-temporal cortex
(後頭側頭皮質)
prefrontal
cortex
前頭前皮質
楔前部を超音波で刺激しよう!
超音波でニューロンを発火しやすくできる
• 解像度は2mmくらい
• メカニズムは、イオンチャネルを機械的に刺激するから、と
いう説はあるが分かっていない。
• (動画)マウスのしっぽ、前足、ひげを動かせる
Transcranial Pulsed Ultrasound Stimulates Intact
Brain Circuits
Neuron(2010)
William J. Tyler et al.
http://dx.doi.org/10.1016/j.neuron.2010.05.008
Transcranial focused ultrasound modulates the
activity of primary somatosensory cortex in humans
Nature neuroscience (2014)
William J. Tyler et al.
http://dx.doi.org/10.1038/nn.3620
人間でも超音波で脳活動を調節できる
• 解像度は直径4.9mm, 奥行き18mm
• 一次体性感覚野に超音波を当てると、指に針を2本当てている
か1本だけ当てているか当てるクイズの正答率が良くなる
超音波による脳手術が2014年に実現
http://www.insightec.com/clinical/neurosurgery/
• 出力の高い超音波によって脳腫瘍を焼き固めてしまうことが
できる。
• (動画)脳腫瘍手術のCG
明晰夢まくらのイメージ
超音波トランスデューサー
横から見た枕 上から見た枕(透視図)
波の重ね合わせの原理で
楔前部に焦点を合わせる
(競合1) foc.us
http://world.foc.us/focus-lucid-dreams
• 元々はゲーマーの反応速度を上げることを謳っていた製品。
• たぶん、40Hzの電気刺激を与えると明晰夢を見る、という
論文からヒントを得て、明晰夢にも使えると謳うようになっ
たのだと思う。
• tACS(transcranial Alternative Current Stimulation, 経
頭蓋交流電気刺激)という。
Induction of self awareness in dreams
through frontal low current stimulation of
gamma activity
Nature Neuroscience(2014)
Ursula Voss et al.
dx.doi.org/10.1038/nn.3719
(競合2) dreamleaf
http://luciddreamleaf.com/
(競合3) 音を頼りに明晰になろう
https://play.google.com/store/apps/details?id=com.lucid_dreaming.awoken
• Awoken (Androidアプリ)
• 明晰夢専用の通知音を設定する
• 起きている時間にもランダムに通知音がなる。通知音がなっ
たら、自分は本当に起きているか確認する習慣をつける。
• 寝ている間にランダムに通知音がなる。
(競合4) SONYの特許
Sleep aid device and method, program and
recording medium
認定
公開日 2015年1月27日
出願日 2012年7月24日
https://www.google.com/patents/US8939884
レム睡眠やノンレム睡眠を判定するらしい
(参考) Smart Sensor Anti-Snore Pillow
https://www.amazon.com/dp/B00L4KEYZW/
• いびきを検出すると、自動的にエアー
バッグが膨らんだりしぼんだりして、
息をしやすいように調節するらしい。
おしまい
• 研究室ではこういう不真面目なことはできないから困るね
• そもそもまだ研究室所属してないから困るね
• 超音波の波の重ね合わせと、どうやって楔前部の位置を推定
するかが難しそう。
• アイデア権放棄していいので誰か作って欲しい
筑波大学 情報学群 情報メディア創成学類 5年目(休学中)
鳥羽雄希 (TORIBA Yuki)

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明晰夢まくらを作りたい