Lateralized human cortical activity for shifting visuospatial attention and initiating saccades.
Lateralized human cortical activity for shifting visuospatial attention and initiating saccades.
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用于转移视觉空间注意力和启动眼跳的侧化人类皮质活动。
DOI：
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发表时间：
1998
影响因子：
2.5
通讯作者：
Detlef Kömpf
中科院分区：
文献类型：
--
作者：
B. Wauschkuhn;R. Verleger;Edmund Wascher;Wolfgang Klostermann;Marcel Burk;Wolfgang Heide;Detlef Kömpf
转移视觉空间注意力和启动扫视的偏侧化人类皮层活动。神经生理学杂志。80：2900-2910，1998.通过研究人的头皮脑电图（EEG）中视觉注意转移与眼跳准备的电生理相关性，探讨了两者之间的关系。在不同的任务指令下，参与者必须对一个显著的彩色或灰色圆圈进行扫视，同时呈现在相反的视觉半野中。在刺激开始和扫视之间的短时间间隔内测量EEG，集中于侧化活动，对侧的相关刺激的一侧或扫视的方向。发现偏侧化的三个组成部分：1）与扫视方向无关的相关刺激的对侧活动，在刺激开始后250 ms达到峰值，在侧顶叶部位以上最大，2）如果刺激也是扫视的目标，则相关刺激的对侧活动，在刺激开始后330-480 ms最大，在头皮上广泛分布，但在侧顶叶部位上方再次具有焦点，以及3）对侧扫视方向的活动，在扫视前约100 ms开始，在近中顶叶部位上方最大，具有一些任务依赖的额中央贡献。由于它们对任务变量的敏感性，成分1被解释为将注意力转移到相关刺激，成分2被解释为如果相关刺激也是扫视目标则反映注意力转移的增强，成分3被解释为用于扫视执行的触发信号。因此，人类的神经生理学数据提供了证据，既独立和相互依赖的过程眼跳准备和转移的视觉注意。
Lateralized human cortical activity for shifting visuospatial attention and initiating saccades. J. Neurophysiol. 80: 2900-2910, 1998. The relation between shifts of visual attention and saccade preparation was investigated by studying their electrophysiological correlates in human scalp-recorded electroencephalogram (EEG). Participants had to make saccades either to a saliently colored or to a gray circle, simultaneously presented in opposite visual hemifields, under different task instructions. EEG was measured within the short interval between stimulus onset and saccade, focusing on lateralized activity, contralateral either to the side of the relevant stimulus or to the direction of the saccade. Three components of lateralization were found: 1) activity contralateral to the relevant stimulus irrespective of saccade direction, peaking 250 ms after stimulus onset, largest above lateral parietal sites, 2) activity contralateral to the relevant stimulus if the stimulus was also the target of the saccade, largest 330-480 ms after stimulus onset, widespread over the scalp but with a focus again above lateral parietal sites, and 3) activity contralateral to saccade direction, beginning about 100 ms before the saccade, largest above mesial parietal sites, with some task-dependent fronto-central contribution. Because of their sensitivity to task variables, component 1 is interpreted as the shifting of attention to the relevant stimulus, component 2 is interpreted as reflecting the enhancement of the attentional shift if the relevant stimulus is also the saccade target, and component 3 is interpreted as the triggering signal for saccade execution. Thus human neurophysiological data provided evidence both for independent and interdependent processes of saccade preparation and shifts of visual attention.
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DOI：
10.1073/pnas.92.3.925
发表时间：
1995-01-31
影响因子：
11.1
作者：
ODRISCOLL, GA;ALPERT, NM;HOLZMAN, PS
通讯作者：
HOLZMAN, PS
DOI：
10.1037/0096-1523.20.5.1000
发表时间：
1994-10-01
影响因子：
2.1
作者：
LUCK, SJ;HILLYARD, SA
通讯作者：
HILLYARD, SA
影响因子：
3.7
作者：
LUCK, SJ;HILLYARD, SA
通讯作者：
HILLYARD, SA
影响因子：
3.7
作者：
COLES, MGH
通讯作者：
COLES, MGH