Is delayed foveal feedback critical for extra-foveal perception?
Is delayed foveal feedback critical for extra-foveal perception?
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DOI：
10.1016/j.cortex.2012.03.007
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发表时间：
2013-01-01
期刊：
影响因子：
3.6
通讯作者：
Williams, Mark A.
中科院分区：
文献类型：
--
作者：
Chambers, Christopher D.;Allen, Christopher P. G.;Williams, Mark A.
最近的神经影像学证据表明，视觉输入超出中央凹可以“反馈”到中央凹视皮层，以构建一个新的retinotopic表示。然而，这些表征是否对中心凹外感知至关重要仍不清楚。使用经颅磁刺激，我们发现，相对较晚（350-400毫秒）的视网膜中央凹皮层破坏受损的感知辨别的对象在周边。这些结果是一致的假设，中央凹视网膜皮层的反馈是至关重要的额外的中央凹的看法，并提供额外的证据，在人类视觉的“建设性”反馈。(C)2012爱思唯尔有限公司保留所有权利。
Recent neuroimaging evidence suggests that visual inputs arising beyond the fovea can be 'fed back' to foveal visual cortex to construct a new retinotopic representation. However, whether these representations are critical for extra-foveal perception remains unclear. Using transcranial magnetic stimulation we found that relatively late (350-400 msec) disruption of foveal retinotopic cortex impaired perceptual discrimination of objects in the periphery. These results are consistent with the hypothesis that feedback to the foveal retinotopic cortex is crucial for extra-foveal perception, and provide additional evidence for 'constructive' feedback in human vision. (C) 2012 Elsevier Ltd. All rights reserved.