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首页> 美国卫生研究院文献>Frontiers in Human Neuroscience >Overestimation of the second time interval replaces time-shrinking when the difference between two adjacent time intervals increases
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Overestimation of the second time interval replaces time-shrinking when the difference between two adjacent time intervals increases

机译：当两个相邻时间间隔之间的差异增大时第二个时间间隔的高估将替代时间缩减

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摘要

When the onsets of three successive sound bursts mark two adjacent time intervals, the second time interval can be underestimated when it is physically longer than the first time interval by up to 100 ms. This illusion, time-shrinking, is very stable when the first time interval is 200 ms or shorter (, Perception, 33). Time-shrinking had been considered a kind of perceptual assimilation to make the first and the second time interval more similar to each other. Here we investigated whether the underestimation of the second time interval was replaced by an overestimation if the physical difference between the neighboring time intervals was too large for the assimilation to take place; this was a typical situation in which a perceptual contrast could be expected. Three experiments to measure the overestimation/underestimation of the second time interval by the method of adjustment were conducted. The first time interval was varied from 40 to 280 ms, and such overestimations indeed took place when the first time interval was 80–280 ms. The overestimations were robust when the second time interval was longer than the first time interval by 240 ms or more, and the magnitude of the overestimation was larger than 100 ms in some conditions. Thus, a perceptual contrast to replace time-shrinking was established. An additional experiment indicated that this contrast did not affect the perception of the first time interval substantially: The contrast in the present conditions seemed unilateral.
机译：当三个连续声音突发的开始标记两个相邻的时间间隔时，如果第二个时间间隔实际比第一个时间间隔长100 ms，则第二个时间间隔可能会被低估。当第一个时间间隔为200 ms或更短时，这种时间收缩的幻想非常稳定（Perception，33）。时间缩减被认为是一种使第一和第二时间间隔彼此更相似的知觉同化。在这里，我们研究了如果相邻时间间隔之间的物理差异太大而无法进行同化，则是否将第二个时间间隔的低估替换为高估。这是典型的情况，在这种情况下可以预期到感知上的对比。进行了三个通过调整方法测量第二时间间隔的高估/低估的实验。第一个时间间隔从40到280 ms不等，当第一个时间间隔为80-280 ms时，确实发生了高估。当第二个时间间隔比第一个时间间隔长240 ms或更多时，高估是可靠的，并且在某些情况下，高估的幅度大于100 ms。因此，建立了代替时间缩减的感知对比。另一个实验表明，这种对比基本上不会影响对第一时间间隔的感知：在当前条件下，这种对比似乎是单方面的。

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