Head movements modulate visual responsiveness in the absence of gaze shifts
Head movements modulate visual responsiveness in the absence of gaze shifts
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DOI：
10.1097/wnr.0b013e3282ff0f86
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发表时间：
2008-05-28
期刊：
影响因子：
1.7
通讯作者：
de'Sperati, Claudio
中科院分区：
文献类型：
--
作者：
Cicchini, Guido M.;Valsecchi, Matteo;de'Sperati, Claudio
视觉空间注意力与眼跳密切相关。鉴于视线转移通常是通过眼头运动的结合来完成的，注意力也可能与头部运动相关。我们发现，简单地转动头部而不转移目光就足以引起对视觉刺激的短暂不平衡反应。在一致试验中，当头部向刺激移动时，在水平头部运动开始前不久对刺激的手动反应比在不一致试验中更快，当头部远离刺激时。这些效果与眼跳观察到的效果类似。我们将此作为视觉空间注意力和头部运动之间紧密联系的证据，即使目光没有转移。
Visuospatial attention is strongly associated with saccades. Given that gaze shifts are often accomplished by combined eye-head movements, attention may also be coupled to head movements. We showed that simply turning the head without shifting the gaze is sufficient to cause a transient unbalance in responding to a visual stimulus. Manual responses to a stimulus flashed shortly before the onset of a horizontal head movement were faster in congruent trials, when the head moved towards the stimulus, than in incongruent trials, when the head moved away from the stimulus. These effects are similar to those observed for saccades. We take this as evidence for a tight link between visuospatial attention and head movements, even when the gaze does not shift.