触覚刺激が情動的な視覚処理に与える影響
Achille Pasqualotto1,2,3, Utek Leong1,4, Ryo Kitada1,5
1School of Social Sciences, Nanyang Technological University, Singapore, Singapore.
Frontiers in psychology
|December 12, 2025
まとめ
触覚は情動的な視覚処理速度に影響を与える。柔らかい素材に触れると感情的な単語の評価が遅くなり、触覚が視覚刺激を感情的にどのように認識するかに影響を与えることが示唆される。
科学分野:
- 心理学
- 神経科学
- 認知科学
背景:
- 触覚系と視覚系の間の多感覚統合は、物体認識などの認知課題において確立されている。
- 多感覚相互作用が情動(感情)処理に与える影響は、依然としてあまり理解されていない。
- 本研究では、触覚入力が視覚刺激の感情的評価をどのように調節するかを調査する。
研究 の 目的:
- 触覚が視覚刺激の情動処理に与える影響を調べること。
- 触覚入力が情動価評価の速度または精度に影響を与えるかどうかを判断すること。
- 触覚入力が情動処理と意味処理(認知処理)に与える影響を区別すること。
主な方法:
- 様々なコンプライアンス(硬い vs 柔らかい)のウレタンゴムと、視覚的に提示された単語を用いた2つの実験を実施した。
- 参加者は、異なる質感を触りながら、単語の情動価を評価した。
- 第2の実験では、情動処理と認知処理を区別するために抽象度評価を評価した。
主要な成果:
- 柔らかい刺激に触れると、視覚的な単語の情動価評価における反応時間が有意に遅くなった。
- 触覚操作は情動価の評価自体を変更しなかった。
- 抽象度評価(意味処理)は触覚刺激の影響を受けなかった。
結論:
- 触覚は情動的な視覚処理の速度に影響を与える。
- 観察された触覚が感情的知覚に与える影響の根底には、注意のメカニズムが存在する可能性がある。
- これは、体感覚入力が視覚情報に対する感情的反応を調節する新たな経路を強調するものである。
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