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DURATION JUDGMENT DISRUPTION WITH MINIMAL COGNITIVE LOAD

Abstract

Subjective time can be manipulated due to its reliance on sensation, perception, attention, and memory. Our brain uses a combination of neural oscillations and feedback from the environment to maintain and retroactively estimate durations of time. This study used the dual-task paradigm to test the lower limits of subjective time estimate disruption. Under the attentional-gate model, it was predicted that significant disruption of working memory would lead to underestimates of time relative to objective durations. Participants listened to short (1-60 sec) tones over a computer speaker and then were asked to estimate the length of the tones. One trial block included no secondary task. Others required participants to either perform simple arithmetic or read words. The results showed that only arithmetic disrupted time estimates [F(2,72)=3.651, p=0.031], with the assumption that reading short words occurs with little use of working memory.

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