呼吸と心拍間隔変動によるタスク関連注意プロセスの明確な調節
Nozomu H Nakamura1, Kohzoh Yoshino2, Masaki Fukunaga3
1Department of Integrative Physiology, Faculty of Medicine, Hyogo Medical University, 1-1, Mukogawa cho, Nishinomiya, , Hyogo 663-8501, Japan.
The journal of physiological sciences : JPS
|December 30, 2025
まとめ
呼吸パターンと心拍変動は、認知課題中の反応時間に影響を与える。具体的には、吸気のタイミングと心拍間隔の変化が注意処理と課題遂行に独立して影響する。
科学分野:
- 認知神経科学
- 心肺心理生理学
背景:
- 注意処理と反応時間(RT)は生理学的状態の影響を受ける。
- 呼吸、心臓活動、および認知機能、特に注意処理の間の相互作用は完全には理解されていない。
- 認知課題の遂行を調節する上での心肺系の役割を調査することは非常に重要である。
研究 の 目的:
- 短期記憶課題の遂行における呼吸とRRI変動の具体的な関与を決定すること。
- 呼吸相、RRIダイナミクス、および反応時間調節の関係を解明すること。
主な方法:
- 36人の健康な参加者が短期記憶課題を完了した。
- 正答に対する反応時間(RT)を、呼吸イベント(吸気開始)および心拍間隔(RRI)速度に関連して分析した。
- 生理学的測定値とRTの時間的関係を分析するために多レベルモデリングを採用した。
主要な成果:
- 呼気から吸気への移行(吸気開始)中に反応時間(RT)が著しく増加した。
- 記憶検索段階中に心拍間隔(RRI)速度が加速した際にもRTが増加した。
- 多レベル分析により、吸気開始とRRI速度増加との時間的ずれが示唆され、RTに影響を与える独立したメカニズムが示唆された。
結論:
- 呼吸相と心拍間隔(RRI)変動の両方が、注意処理と課題遂行に独立して影響を与える。
- この結果は、呼吸と心臓活動に関連する異なる生理学的メカニズムが認知遂行を調節することを示唆している。
- この研究は、注意と遂行に対する心肺の影響の機能的分化に関する洞察を提供する。
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