Looking ahead: the perceived direction of gaze shifts before the eyes move.

Looking ahead: the perceived direction of gaze shifts before the eyes move.
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DOI:
10.1167/9.9.1
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发表时间:
2009-08-10
期刊:
影响因子:
1.8
通讯作者:
Cavanagh P
Cavanagh P
中科院分区:
医学4区
文献类型:
--
作者:
Hunt AR;Cavanagh P

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我们怎么知道我们在看哪里?我们的注视方向通常被认为是分配给我们的中央凹上的世界位置,但这可能并不总是成立,特别是,正如我们在这里报告的那样,就在眼球运动之前。观察者将目光转向指针快速移动的时钟,并报告当他们的眼睛第一次落地时感知到的时钟上的时间。报告的时间比眼睛到达的实际时间早 39 毫秒。在控制条件下,时钟移动到眼睛,模仿视网膜运动,但没有眼睛运动。这里报告的时间比到达时时钟上的实际时间滞后 27 毫秒。在我们的实验中,感知注视的时间与眼球运动时视觉皮层神经元中观察到的预测激活的时间相似。
How do we know where we are looking? Our direction of gaze is commonly thought to be assigned to the location in the world that falls on our fovea, but this may not always hold, especially, as we report here, just before an eye movement. Observers shifted their gaze to a clock with a fast-moving hand and reported the time perceived to be on the clock when their eyes first landed. The reported time was 39 ms earlier than the actual time the eyes arrived. In a control condition, the clock moved to the eyes, mimicking the retinal motion but without the eye movement. Here the reported time lagged 27 ms behind the actual time on the clock when it arrived. The timing of perceived fixation in our experiment is similar to that for the predictive activation observed in visual cortex neurons at the time of eye movements.
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发表时间: 2002-03-19
影响因子: 11.1
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