Activation of the visual cortex in motivated attention
Activation of the visual cortex in motivated attention
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DOI：
10.1037/0735-7044.117.2.369
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发表时间：
2003-04-01
影响因子：
1.9
通讯作者：
Desai, P
中科院分区：
文献类型：
--
作者：
Bradley, MA;Sabatinelli, D;Desai, P
当参与者观看与主要动机状态（即，暴力死亡的受害者，观众导向的威胁，和色情）。这种功能活动大于对不太强烈的情绪（即，幸福的家庭或愤怒的面孔）或中性图像（即，家居用品，中性面孔）。功能活动的程度和强度与不同图片内容的判断情感唤醒有关，无论图片是彩色还是灰度，功能激活的模式都是相同的。有人建议，更广泛的视觉系统激活反映了“动机性注意”，其中食欲或防御性动机参与引导注意力，促进感知处理的生存相关的刺激。
Functional activation (measured with fMRI) in occipital cortex was more extensive when participants view pictures strongly related to primary motive states (i.e., victims of violent death, viewer-directed threat, and erotica). This functional activity was greater than that observed for less intense emotional (i.e., happy families or angry faces) or neutral images (i.e., household objects, neutral faces). Both the extent and strength of functional activity were related to the judged affective arousal of the different picture contents, and the same pattern of functional activation was present whether pictures were presented in color or in grayscale. It is suggested that more extensive visual system activation reflects "motivated attention," in which appetitive or defensive motivational engagement directs attention and facilitates perceptual processing of survival-relevant stimuli.