主観的現在における知覚的持続時間の諸現象

Phenomenon of Perceived Duration in the Subjective Present

主観的現在の現象のうち，特に持続時間の知覚について，心理物理学的研究，認知神経科学的研究，および処理機構の計算論的モデル研究を概括する。「運動している視覚刺激の時間が長く感じられる現象」「視覚運動に順応した後では視覚刺激の時間が短く感じられる現象」および「注意を向けた刺激が長く，向けない刺激が短く感じられる現象」を紹介し，おのおのの処理機構が視覚情報処理階層構造のどの段階に位置するか論じる。

Abstract

Among phenomena involving the subjective present, duration perception is especially worth discussing from the viewpoints of psychophysics, cognitive neuroscience, and computational modeling of underlying mechanisms. First, several situations in which moving visual stimuli appear to last longer are reported. Second, the phenomenon of illusory time compression, which occurs in a moving stimulus after prolonged observation of another stimulus moving at a faster speed, is described. Third, how an attended visual stimulus appears to last longer and how a stimulus appears to last for a shorter duration when attention is directed away are explained. Finally, possible underlying mechanisms in relation to the stages of hierarchical visual information processing are discussed.