期刊
NEUROIMAGE
卷 39, 期 2, 页码 885-893出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.neuroimage.2007.09.028
关键词
acoustic parameters; arousal; fMRI; emotional prosody; regression analysis; superior temporal gyrus
The human brain has a preference for processing of emotionally salient stimuli. In the auditory modality, emotional prosody can induce such involuntary biasing of processing resources. To investigate the neural correlates underlying automatic processing of emotional information in the voice, words spoken in neutral, happy, erotic, angry, and fearful prosody were presented in a passive-listening functional magnetic resonance imaging (fMRI) experiment. Hemodynamic responses in right mid superior temporal gyrus (STG) were significantly stronger for all emotional than for neutral intonations. To disentangle the contribution of basic acoustic features and emotional arousal to this activation, the relation between event-related responses and these parameters was evaluated by means of regression analyses. A significant linear dependency between hemodynamic responses of right mid STG and mean intensity, mean fundamental frequency, variability of fundamental frequency, duration, and arousal of the stimuli was observed. While none of the acoustic parameters alone explained the stronger responses of right mid STG to emotional relative to neutral prosody, this stronger responsiveness was abolished both by correcting for arousal or the conjoint effect of the acoustic parameters. In conclusion, our results demonstrate that right mid STG is sensitive to various emotions conveyed by prosody, an effect which is driven by a combination of acoustic features that express the emotional arousal in the speaker's voice. (C) 2007 Elsevier Inc. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据