Ichikawa Makoto, Miyoshi Masataka
Department of Psychology, Chiba University, Chiba, Japan.
Iperception. 2020 Dec 25;11(6):2041669520981996. doi: 10.1177/2041669520981996. eCollection 2020 Nov-Dec.
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.
众所周知，给定时间段内的感知持续时间会随着感知事件数量的减少而缩短。我们研究了在观看快速序列视觉呈现（RSVP）序列时，由注意瞬脱导致的目标检测失败是否会影响这种感知持续时间的缩短。在两个实验中，试验由显示两个系列的RSVP序列组成；在第一个序列（比较序列）中，有两个、一个或没有数字作为嵌入字母串中的目标呈现，而在第二个序列（标准序列）中，只呈现字母。在每个试验中，参与者判断比较序列的持续时间是否被感知为比标准序列长（实验1），或者比较序列中的帧数是否被感知为比标准序列多（实验2）。结果表明，感知持续时间会因目标检测而增加，但不会因呈现帧数的增加而增加，尽管感知帧数会因目标检测和呈现帧数的增加而增加。这些结果表明，观看RSVP序列时的感知持续时间是由完成目标检测所需的认知负荷决定的，而不是由感知帧数决定的。
