Perceived duration of Visual and Tactile Stimuli Depends on Perceived Speed.
Perceived duration of Visual and Tactile Stimuli Depends on Perceived Speed.
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DOI：
10.3389/fnint.2011.00051
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发表时间：
2011
影响因子：
3.5
通讯作者：
Morrone MC
中科院分区：
文献类型：
--
作者：
Tomassini A;Gori M;Burr D;Sandini G;Morrone MC
众所周知，视觉刺激的感知持续时间受到速度的强烈影响：快速移动的刺激似乎持续时间更长。为了测试这是否是感觉系统的一般特性，我们要求参与者再现视觉和触觉光栅的持续时间，以及以可变速度（3.5-15 cm/s）移动三种不同持续时间（400，600和800 ms）的视觉-触觉光栅。对于这两种方式，刺激的表观持续时间增加强烈的刺激速度，触觉比视觉刺激更是如此。此外，视觉刺激比触觉刺激持续约200 ms。视觉-触觉刺激的表观持续时间位于单峰估计之间，正如贝叶斯帐户预测的那样，但再现的双峰精度并没有显示出理论上的改善。跨模态速度匹配任务显示，视觉刺激被认为比触觉刺激更快地移动。为了检验视觉和触觉刺激的感知持续时间的巨大差异是否是由它们的感知速度的差异引起的，我们重复了时间再现任务，视觉和触觉刺激在表观速度上相匹配。这减少了，但没有完全消除表观持续时间的差异。这些结果表明，对于视觉和触觉，感知持续时间取决于速度，指向共同的时间感知策略。
It is known that the perceived duration of visual stimuli is strongly influenced by speed: faster moving stimuli appear to last longer. To test whether this is a general property of sensory systems we asked participants to reproduce the duration of visual and tactile gratings, and visuo-tactile gratings moving at a variable speed (3.5–15 cm/s) for three different durations (400, 600, and 800 ms). For both modalities, the apparent duration of the stimulus increased strongly with stimulus speed, more so for tactile than for visual stimuli. In addition, visual stimuli were perceived to last approximately 200 ms longer than tactile stimuli. The apparent duration of visuo-tactile stimuli lay between the unimodal estimates, as the Bayesian account predicts, but the bimodal precision of the reproduction did not show the theoretical improvement. A cross-modal speed-matching task revealed that visual stimuli were perceived to move faster than tactile stimuli. To test whether the large difference in the perceived duration of visual and tactile stimuli resulted from the difference in their perceived speed, we repeated the time reproduction task with visual and tactile stimuli matched in apparent speed. This reduced, but did not completely eliminate the difference in apparent duration. These results show that for both vision and touch, perceived duration depends on speed, pointing to common strategies of time perception.