Cortical regions involved in eye movements, shifts of attention, and gaze perception
Cortical regions involved in eye movements, shifts of attention, and gaze perception
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DOI：
10.1002/hbm.20145
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发表时间：
2005-05-01
影响因子：
4.8
通讯作者：
Paus, T
中科院分区：
文献类型：
--
作者：
Grosbras, MN;Laird, AR;Paus, T
人类的视觉是一个活跃的过程，它包括在视觉场景中转移注意力，无论眼睛是否移动。这种注意力的转移可以随意产生（内源性的），也可以自动触发，即，在外部刺激的反应中产生，包括社会相关的线索，如别人的目光。在这些过程中涉及的共同和独特的大脑机制是什么？为了解决这个问题，我们对59个脑成像实验进行了定量效应定位荟萃分析，这些实验的结果使用标准化坐标发表。对于每个兴趣条件，即自愿和视觉触发的眼球运动，自愿和视觉触发的（隐蔽）注意力转移，以及对他人凝视的感知，我们计算了激活似然估计（ALE）图。这些图在大脑的每个体素上表示报告与感兴趣的条件相关的信号变化的概率。对于眼球运动，这一分析证实了前额视野、辅助视野和顶叶扫视相关区域的空间位置。隐蔽注意力转移图与跳跃式眼球运动图显示出最高的相似性。注视知觉在右侧顶叶内沟和外侧中央前回中表现出与其他情况相同的激活可能性。它与自反行为的相似性大于与自发扫视和注意力转移的相似性。我们认为，当我们随着视觉目标的出现而转移注意力的时候，或者当我们看到别人转移目光的时候，一个由额顶叶和颞叶组成的核心网络都会被调动起来。(c) 2005 Wiley-Liss, Inc。
Human vision is an active process that involves shifting attention across the visual scene, with or without moving the eyes. Such shifts of attention can be generated at will (endogenously) or be triggered automatically, i.e., generated in response to exogenous stimuli including socially relevant cues such as someone else's gaze. What are the common and distinct brain mechanisms involved in these processes? To address this question, we carried out a quantitative effect-location meta-analysis of 59 brain-imaging experiments whose results were published using standardized coordinates. For each condition of interest, namely voluntary and visually triggered eye movements, voluntary and visually triggered (covert) shifts of attention, and perception of someone else's gaze, we computed activation likelihood estimation (ALE) maps. Those maps represent at each voxel of the brain the probability of reporting a signal change related to the condition of interest. For eye movements, this analysis confirmed the spatial location of the frontal eye fields, supplementary eye fields, and parietal saccade-related regions. The map of covert shifts of attention demonstrated highest similarity with the map of saccadic eve movements. Gaze perception showed common activation likelihood with the other conditions in the right intraparietal sulcus and in the lateral precentral gyrus. It demonstrated more similarity with the reflexive than with the voluntary saccades and shifts of attention. We propose that a core network of frontoparietal and temporal brain regions is recruited when we shift the focus of our attention with or without eye movements in response to the appearance of a visual target, as well as when we see someone else shift his or her gaze. (c) 2005 Wiley-Liss, Inc.