Spatial attention triggered by eye gaze : Evidence from a microsaccade study
Spatial attention triggered by eye gaze : Evidence from a microsaccade study
复制标题
眼睛注视引发的空间注意力：来自微扫视研究的证据
作者：
Yokoyama;T.;Noguchi;Y.;Kita;S
虽然人类的空间注意力是被引向他人的注视方向的，但是由他人的注视方向所引起的空间注意力转移是外源性还是内源性的定向仍然是一个没有回答的问题。本研究旨在探讨哪种类型的注意定向与注视方向引起的注意转移有关。为了探讨这个问题，我们进行了注意线索范式和测量任务过程中的微眼跳。在实验1中，面部刺激被放置在屏幕的中心作为注视线索，其方向显示目标呈现的有效性。我们测量了提示后的微扫视。结果表明，提示出现后200 - 400ms的时间窗内，微眼跳的方向是朝向提示方向。在实验2中，我们进行了定向分离外源性和内源性定向的反眼跳任务，因此，注视方向和线索方向不同于实验1。实验2的结果与实验1的结果一致，因此，微眼跳的方向是朝向线索方向，而不是注视方向。这些结果表明，由注视方向引起的空间注意是内源性定向，而不是外源性定向。
Although human spatial attention is elicited toward gaze direction of another, it remains one unanswered question whether shift of spatial attention elicited by gaze direction of another is exogenous or endogenous orienting. The purpose of this study is to examine which type of attentional orienting is related to attentional shift elicited by gaze direction. To pursue this question, we conducted the attentional cuing paradigm and measured microsaccades during the task. In experiment 1, a facial stimulus was positioned in the center of the screen as a gaze cue whose direction showed the validity of the target presentation. We measured microsaccades after presentation of the cue. In the result, microsaccade direction was toward cue direction only in the 200 – 400ms time window after presentation of the cue. In experiment 2, we conducted the anti-saccade task for directionally separating exogenous and endogenous orienting, thus, gaze direction and cue direction were different unlike experiment 1. The result of experiment 2 agreed with the results of experiment 1, therefore, microsaccade direction was toward cue direction, not gaze direction. These results indicate that spatial attention elicited by gaze direction is endogenous orienting, not exogenous orienting.