空間的注意の間に皮質状態の選択的調節
Tatiana A Engel1,2, Nicholas A Steinmetz3, Marc A Gieselmann4
1Departments of Bioengineering and Electrical Engineering, Stanford University, Stanford, CA, USA. tatiana.engel@stanford.edu.
Science (New York, N.Y.)
|December 10, 2016
まとめ
脳活動が自発的にアクティブ (オン) と非アクティブ (オフ) の状態にシフトします. この神経の動態は 特に視覚野では 選択的注意力に影響を与え 行動的パフォーマンスを予測します
科学分野:
- 神経科学
- 認知神経科学
- システム神経科学
背景:
- 神経皮質の活動には 固有の変動がある
- これらの内生的なダイナミクスの目標指向行動への影響はよく理解されていません.
研究 の 目的:
- 神経皮質の自発的な活動変動と 目標に導かれた行動の関係を調べる
- 局所的な皮質状態の変化が選択的注意とパフォーマンスを影響するかどうかを判断する.
主な方法:
- 霊長類の視覚野で ニューラル活動を記録した
- "オン" (強烈なピーク) と"オフ" (薄弱なピーク) の間の自発的な変動を分析した.
- 選択的注意のタスク中にこれらのダイナミクスの調節を調べた.
- 行動パフォーマンスと相関する局所アンサンブル活動フェーズ.
主要な成果:
- 皮質の各層で自発的な神経活動が 同期した"オン"と"オフ"状態で変動した.
- これらの"オン・オフ"ダイナミクスは 選択的注意によって局所的に調節された.
- 局所アンサンブル活動の段階は 行動の結果を予測します
結論:
- 皮質の状態は 認知の要求に基づいて 局所的に動的に制御されます
- 皮質状態の局所的な変化は 目標指向の行動に大きく影響します
- 神経の動態を理解することは 認知機能の説明に不可欠です
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