A Bayesian perceptual model replicates the cutaneous rabbit and other tactile spatiotemporal illusions.

A Bayesian perceptual model replicates the cutaneous rabbit and other tactile spatiotemporal illusions.
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贝叶斯感知模型复制了皮肤兔子和其他触觉时空幻觉。

DOI:
10.1371/journal.pone.0000333
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发表时间:
2007-03-28
期刊:
影响因子:
3.7
通讯作者:
Goldreich, Daniel
Goldreich, Daniel
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Goldreich, Daniel

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当短暂的刺激在两个或多个位置快速连续地接触皮肤时,知觉会显著地缩短连续事件之间的间隔距离,并延长连续事件之间的时间。这些感知时空扭曲的起源是未知的。在这里,我表明,这些错觉的影响,我的任期知觉长度收缩和时间膨胀,是新兴的属性贝叶斯观察员模型,包括事先预期的速度。快速移动的刺激违反预期,引起知觉长度收缩和时间膨胀。贝叶斯观察者复制了皮肤兔子错觉、tau效应、kappa效应和其他时空错觉。此外,它还显示了真实的触觉时间顺序判断和空间注意效应。这个简单模型的解释能力非常强,它支持了亥姆霍兹首先提出的假设,即大脑会偏向于感知,而偏向于期望。具体来说,结果表明,大脑自动地将先前的期望速度,以克服空间和时间的不精确性固有的感觉神经信号。
When brief stimuli contact the skin in rapid succession at two or more locations, perception strikingly shrinks the intervening distance, and expands the elapsed time, between consecutive events. The origins of these perceptual space-time distortions are unknown. Here I show that these illusory effects, which I term perceptual length contraction and time dilation, are emergent properties of a Bayesian observer model that incorporates prior expectation for speed. Rapidly moving stimuli violate expectation, provoking perceptual length contraction and time dilation. The Bayesian observer replicates the cutaneous rabbit illusion, the tau effect, the kappa effect, and other spatiotemporal illusions. Additionally, it shows realistic tactile temporal order judgment and spatial attention effects. The remarkable explanatory power of this simple model supports the hypothesis, first proposed by Helmholtz, that the brain biases perception in favor of expectation. Specifically, the results suggest that the brain automatically incorporates prior expectation for speed in order to overcome spatial and temporal imprecision inherent in the sensorineural signal.
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