ヒト大脳皮質における感覚バイアスおよび超感覚ワーキングメモリネットワーク間の相互作用
Thomas Possidente1, Vaibhav Tripathi1,2, Joseph T McGuire1
1Department of Psychological and Brain Sciences, Boston University, Boston, MA, USA.
Communications biology
|February 9, 2026
まとめ
ヒトのワーキングメモリは相互作用する脳ネットワークに依存している。聴覚タスクはこれらのネットワークを動的に再編成するが、視覚タスクはそうではなく、非対称なワーキングメモリシステムを示している。
科学分野:
- 神経科学
- 認知神経科学
- 脳画像
背景:
- ヒトのワーキングメモリは、分散した脳ネットワークを関与させます。
- 超感覚ネットワークは、コンテンツ固有の視覚および聴覚ネットワークと相互作用します。
研究 の 目的:
- 超感覚およびコンテンツ固有のワーキングメモリネットワーク間の相互作用を調査すること。
- 視覚および聴覚ワーキングメモリタスク中のネットワークダイナミクスを対比すること。
主な方法:
- タスクおよび安静時fMRIを使用した機能的接続性分析。
- 視覚および聴覚ワーキングメモリタスクを実行している24人の参加者を調べました。
主要な成果:
- 安静時には、超感覚ネットワークの接続性は、聴覚ネットワークよりも視覚ネットワークの方が強いです。
- 聴覚タスクは聴覚ネットワークの接続性を動的に増加させましたが、視覚タスクでは最小限の変化しか示しませんでした。
- 聴覚ワーキングメモリの精度は、聴覚ネットワークの接続性の変化と相関していました。
結論:
- ワーキングメモリネットワークの組織は、感覚モダリティ間で非対称です。
- 動的なネットワーク再編成は、特に聴覚情報に関して、ワーキングメモリタスクのパフォーマンスをサポートします。
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