Audiovisual time perception is spatially specific.
Audiovisual time perception is spatially specific.
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DOI：
10.1007/s00221-012-3038-3
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发表时间：
2012-05
影响因子：
2
通讯作者：
Whitaker, David
中科院分区：
文献类型：
--
作者：
Heron, James;Roach, Neil W.;Hanson, James V. M.;McGraw, Paul V.;Whitaker, David
我们的感觉系统每天都会面临大量的听觉和视觉信号，这些信号的到达时间形成了广泛的视听异步。这些时间关系构成了神经系统在推测哪些信号源自共同外部事件时的重要度量。内部一致性被认为是由感官适应的帮助：反复暴露于一致的一致性使感知到达时间更接近一致性。然而，鉴于我们的视听环境的多样性，功能上有用的适应将需要限制在一起产生的信号。在目前的研究中，我们调查的两个潜在的制约因素的作用：空间和上下文对应。通过采用实验设计，允许独立控制这两个因素，我们表明，观察者能够同时适应两个相反的时间关系，只要他们在空间上是分离的。当空间隔离被背景刺激特征（在这种情况下，音高和空间频率）取代时，没有观察到这种重新校准。这些效应为专门的神经元机制提供了支持，这些机制与视觉和听觉感官通路中早期的空间选择机制相互作用。
Our sensory systems face a daily barrage of auditory and visual signals whose arrival times form a wide range of audiovisual asynchronies. These temporal relationships constitute an important metric for the nervous system when surmising which signals originate from common external events. Internal consistency is known to be aided by sensory adaptation: repeated exposure to consistent asynchrony brings perceived arrival times closer to simultaneity. However, given the diverse nature of our audiovisual environment, functionally useful adaptation would need to be constrained to signals that were generated together. In the current study, we investigate the role of two potential constraining factors: spatial and contextual correspondence. By employing an experimental design that allows independent control of both factors, we show that observers are able to simultaneously adapt to two opposing temporal relationships, provided they are segregated in space. No such recalibration was observed when spatial segregation was replaced by contextual stimulus features (in this case, pitch and spatial frequency). These effects provide support for dedicated asynchrony mechanisms that interact with spatially selective mechanisms early in visual and auditory sensory pathways.
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影响因子：
3.7
作者：
Heron J;Hanson JV;Whitaker D
通讯作者：
Whitaker D
DOI：
10.1111/j.1460-9568.2010.07194.x
发表时间：
2010-05
期刊：
The European journal of neuroscience
影响因子：
--
作者：
Heron J;Roach NW;Whitaker D;Hanson JV
通讯作者：
Hanson JV
影响因子：
1.8
作者：
Evans KK;Treisman A
通讯作者：
Treisman A
影响因子：
2
作者：
Harrar, Vanessa;Harris, Laurence R.
通讯作者：
Harris, Laurence R.
影响因子：
1.8
作者：
BENNETT, RG;WESTHEIMER, G
通讯作者：
WESTHEIMER, G