Abstract
The aim of the present study was to investigate whether the perception of presentation durations of pictures of different body postures was distorted as function of the embodied movement that originally produced these postures. Participants were presented with two pictures, one with a low-arousal body posture judged to require no movement and the other with a high-arousal body posture judged to require considerable movement. In a temporal bisection task with two ranges of standard durations (0.4/1.6 s and 2/8 s), the participants had to judge whether the presentation duration of each of the pictures was more similar to the short or to the long standard duration. The results showed that the duration was judged longer for the posture requiring more movement than for the posture requiring less movement. However the magnitude of this overestimation was relatively greater for the range of short durations than for that of longer durations. Further analyses suggest that this lengthening effect was mediated by an arousal effect of limited duration on the speed of the internal clock system.
Highlights
We are witnessing a renewal of interest in time distortions in human beings which suggest that judgments of time are affected by non-temporal dimensions [1,2,3]
Our results suggest that the overestimation of time for the more-movement body posture compared to the less-movement body posture is due to a clock rate effect, with the clock running faster for the body posture whose production requires more movement
While the results of the present study reveal that the perception of the duration of pictures depicting body postures changes as a function of the movement implied by this posture, they show that this is true of duration ranges shorter rather than longer than 2 s
Summary
We are witnessing a renewal of interest in time distortions in human beings which suggest that judgments of time are affected by non-temporal dimensions [1,2,3]. Brown [4] examined the difference in the time judgments made by human adults when confronted with a stationary and a moving visual display composed of different geometric shapes. While the number of shapes did not affect time perception, the duration of the moving display was systematically judged longer than that of the stationary display. This lengthening effect increased with the speed of motion, with the duration being judged longer when the shapes moved quickly than when they moved slowly. The aim of the present study was to examine whether the perception of a static image of a body posture whose production has required more or less movement affects time perception
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