用于模仿所见和所听言语的功能激活。
Functional activation for imitation of seen and heard speech.
作者信息
Irwin Julia R, Frost Stephen J, Mencl W Einar, Chen Helen, Fowler Carol A
机构信息
Haskins Laboratories.
出版信息
J Neurolinguistics. 2011 Nov 1;24(6):611-618. doi: 10.1016/j.jneuroling.2011.05.001.
Abstract
This study examined fMRI activation when perceivers either passively observed or observed and imitated matched or mismatched audiovisual ("McGurk") speech stimuli. Greater activation was observed in the inferior frontal gyrus (IFG) overall for imitation than for perception of audiovisual speech and for imitation of the McGurk-type mismatched stimuli than matched audiovisual stimuli. This unique activation in the IFG during imitation of incongruent audiovisual speech may reflect activation associated with direct matching of incongruent auditory and visual stimuli or conflict between category responses. This study provides novel data about the underlying neurobiology of imitation and integration of AV speech.
摘要
本研究考察了观察者被动观察或观察并模仿匹配或不匹配的视听（“麦格克”）言语刺激时的功能磁共振成像（fMRI）激活情况。总体而言，与视听言语感知相比，模仿时额下回（IFG）的激活更强；与匹配的视听刺激相比，模仿麦格克类型的不匹配刺激时激活更强。在模仿不一致的视听言语时，IFG的这种独特激活可能反映了与不一致的听觉和视觉刺激直接匹配或类别反应之间冲突相关的激活。本研究提供了关于视听言语模仿和整合潜在神经生物学的新数据。
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