Visual Attention Modulates Brain Activation to Angry Voices
Visual Attention Modulates Brain Activation to Angry Voices
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DOI：
10.1523/jneurosci.6665-10.2011
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发表时间：
2011-06-29
影响因子：
5.3
通讯作者：
Straube, Thomas
中科院分区：
文献类型：
--
作者：
Mothes-Lasch, Martin;Mentzel, Hans-Joachim;Straube, Thomas
根据提出优先处理威胁的有影响力的模型，之前的研究表明，在听觉分心的情况下，大脑会自动对杏仁核和听觉皮层的愤怒韵律做出反应。然而，尚不清楚在跨模式分心期间是否也观察到愤怒韵律的自动处理。目前的功能磁共振成像研究调查了视觉分心期间大脑对愤怒和中性韵律刺激的反应。在扫描过程中，参与者受到愤怒或中性韵律刺激，同时显示视觉符号。根据任务要求，参与者要么关注声音，要么关注视觉刺激。虽然听觉任务显示听觉皮层和杏仁核对愤怒韵律和中性韵律有明显的激活，但在视觉任务中却没有这种效果。因此，我们的结果表明杏仁核和听觉皮层对愤怒韵律的自动激活存在局限性。这些区域对与威胁相关的声音的激活取决于特定模式的关注。
In accordance with influential models proposing prioritized processing of threat, previous studies have shown automatic brain responses to angry prosody in the amygdala and the auditory cortex under auditory distraction conditions. However, it is unknown whether the automatic processing of angry prosody is also observed during cross-modal distraction. The current fMRI study investigated brain responses to angry versus neutral prosodic stimuli during visual distraction. During scanning, participants were exposed to angry or neutral prosodic stimuli while visual symbols were displayed simultaneously. By means of task requirements, participants either attended to the voices or to the visual stimuli. While the auditory task revealed pronounced activation in the auditory cortex and amygdala to angry versus neutral prosody, this effect was absent during the visual task. Thus, our results show a limitation of the automaticity of the activation of the amygdala and auditory cortex to angry prosody. The activation of these areas to threat-related voices depends on modality-specific attention.