情報処理と社会的機能障害における新皮質刺激/抑制のバランス
Ofer Yizhar1, Lief E Fenno, Matthias Prigge
1Department of Bioengineering, Stanford University, Stanford, California, USA. ofer.yizhar@weizmann.ac.il
Nature
|July 29, 2011
まとめ
脳内の興奮抑制 (E/I) バランスの上昇
科学分野:
- 神経科学は神経科学である.
- 計算神経科学とは
- 精神医学の研究 精神医学の研究
背景:
- 自閉症や統合失調症における重度の行動障害は,神経刺激抑制 (E/I) のバランスの変化から生じるという仮説がある.
- この仮説は遺伝的および病理生理学的データを統合しているが,直接的な実験的検証が欠けている.
研究 の 目的:
- 新しい光学遺伝的ツールを使用して,E/Iバランス仮説をin vivoで因果的に調査する.
- 自由に移動する哺乳類における変化したE/Iバランスに関連した回路生理を調査する.
主な方法:
- 神経のE/Iバランスを正確に操作するための新しい光遺伝的ツールの開発と応用.
- マウスにおけるin vivo電気生理学的記録と行動評価.
主要な成果:
- マウスの中間前頭前皮質におけるE/Iバランスの上昇は,細胞の情報処理を妨げ,行動的欠陥を引き起こした.
- 高周波電力 (30〜80Hz) の増加が観察され,ヒトの臨床研究結果を反映した.
- 抑制性ニューロン興奮性の補償的な強化は,部分的に社会的赤字を救済しました.
結論:
- 結果は,細胞のE/Iバランスの上昇が重度の神経精神疾患の症状に寄与するという仮説を支持する.
- オプトジェネティック操作は,E / Iバランスと行動障害の間の因果関係を提供します.
- 研究結果は,精神疾患の根底にある神経回路についての洞察を提供します.
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