• Authors: Makoto Ichikawa, Masataka Miyoshi

• Title: Perceived duration depends upon target detection in rapid serial visual presentation sequence

• Journal(書誌情報）: i-Perception, 11(6), 2041669520981996.

• doi: 10.1177/2041669520981996

• 論文URL: https://journals.sagepub.com/doi/pdf/10.1177/2041669520981996

• Abstract: It is well known that the perceived duration for a given time period decreases with the reduction of the number of perceived events. We examined whether target detection failures in viewing Rapid Serial Visual Presentation (RSVP) sequence, caused by attentional blink, affect this reduction of perceived duration. In two experiments, trials consisted of displays of two series of RSVP sequences; in the first sequence (the comparison), two, one, or no numerals were presented as targets embedded within the string of letters, while in the second sequence (the standard), only alphabetic letters were presented. In each trial, participants judged whether the duration of the comparison is perceived as longer than that of the standard (Experiment 1), or whether the number of frames in the comparison is perceived as more than that in the standard (Experiment 2). Results showed that perceived duration was inflated with target detection, but not with the increment of presented frames although number of perceived frames was inflated with both target detection and increment of presented frames. These results suggest that perceived duration in viewing RSVP sequences is determined by the cognitive load necessary to accomplish target detection rather than by the number of perceived frames.

• 著者Contact先の email: michikawa[at]chiba-u.jp（[at]を@に変更してください。）

• 日本語によるコメント（オプション，200-300字で）：感じられる時間間隔は，期間中に知覚されるイベント数に対応して長くなると考えられてきた．本研究では，この特性の基礎を理解するために，見落とし現象であるAttentional Blinkを用い，次々と視覚刺激が提示されるRSVP系列観察中に感じられる時間間隔と検出されるターゲット数や提示された刺激数との関係を調べた．実験の結果は，感じられる時間間隔が，検出されたターゲット数や提示された刺激数ではなく，刺激系列中の全ターゲット検出の成否に応じて変動することを示した．感じられる時間間隔は，知覚された刺激数ではなく，視覚刺激の処理に必要な認知的負荷に対応して長くなるものと考えられる．

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