Hemispheric perception of emotional valence from facial expressions
Hemispheric perception of emotional valence from facial expressions
复制标题
DOI：
10.1037//0894-4105.15.4.516
复制
发表时间：
2001-10-01
期刊：
影响因子：
2.4
通讯作者：
Tranel, D
中科院分区：
文献类型：
--
作者：
Adolphs, R;Jansari, A;Tranel, D
作者先前报道，当快乐的脸位于观看者的中性脸的右侧时，正常受试者更好地区分快乐和中性脸;相反，当悲伤的脸显示在左侧时，悲伤和中性脸的区分更好，支持左半球处理积极效价和右半球处理消极效价的作用。在这里，作者将同样的任务扩展到单侧脑损伤的受试者（31例右侧，28例左侧）。右侧受损的受试者在辨别左侧显示的悲伤面孔时表现更差，与先前的研究结果一致。然而，无论是左或右损伤的主题实际上表现上级正常对照组时，辨别快乐的面孔显示在左边。作者认为，负效价的感知优先依赖于右半球，而正效价的感知依赖于左半球和右半球。
The authors previously reported that normal subjects are better at discriminating happy from neutral faces when the happy face is located to the viewer's right of the neutral face; conversely, discrimination of sad from neutral faces is better when the sad face is shown to the left, supporting a role for the left hemisphere in processing positive valence and for the right hemisphere in processing negative valence. Here, the authors extend this same task to subjects with unilateral cerebral damage (31 right, 28 left). Subjects with right damage performed worse when discriminating sad faces shown on the left, consistent with the prior findings. However, subjects with either left or right damage actually performed superior to normal controls when discriminating happy faces shown on the left. The authors suggest that perception of negative valence relies preferentially on the right hemisphere, whereas perception of positive valence relies on both left and right hemispheres.