Fleeting images:: rapid affect discrimination in the visual cortex
Fleeting images:: rapid affect discrimination in the visual cortex
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DOI：
10.1097/01.wnr.0000198437.59883.bb
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发表时间：
2006-02-06
期刊：
影响因子：
1.7
通讯作者：
Lang, PJ
中科院分区：
文献类型：
--
作者：
Junghöfer, M;Sabatinelli, D;Lang, PJ
会聚的电生理和血流动力学的研究结果表明，情感图片的感觉加工是首选的中性图片。而情绪图片知觉的神经innaging研究采用持续几秒钟的刺激持续时间，最近的皮层电调查报告情绪唤起和中性图片处理之间的早期视觉皮层的歧视。在这里，我们使用一个混合的图片呈现模式，涵盖了一系列的快速呈现率（0.75- 6 Hz），而视觉系统的活动与功能磁共振成像记录。结果表明，广泛的敏感性情绪唤醒的次级和下颞视觉皮层。此外，枕叶外侧下和颞叶内侧下视觉皮层的活动显示，在所有呈现率下，情绪敏感性激活相当。结果进一步支持的概念，注意力和知觉处理的一部分是由潜在的动机系统。
Converging electrophysiological and hemodynamic findings indicate sensory processing of emotional pictures is preferred to that of neutral pictures. Whereas neuroinnaging studies of emotional picture perception have employed stimulus durations lasting several seconds, recent electrocortical investigations report early visual cortical discrimination between emotionally arousing and neutral picture processing. Here, we use a hybrid picture presentation paradigm covering a range of rapid presentation rates (0.75-6Hz), while visual system activity is recorded with functional magnetic resonance imaging. Results demonstrate widespread sensitivity to emotional arousal in the secondary and inferior temporal visual cortex. Furthermore, activity in the lateral inferior occipital and medial inferior temporal visual cortex revealed equivalent emotion-sensitive activation across all presentation rates. Results further support the notion that attention and perceptual processing are in part directed by underlying motivational systems.