A little more conversation, a little less action--candidate roles for the motor cortex in speech perception.

A little more conversation, a little less action--candidate roles for the motor cortex in speech perception.
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DOI:
10.1038/nrn2603
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发表时间:
2009-04
影响因子:
34.7
通讯作者:
Eisner, Frank
Eisner, Frank
中科院分区:
医学1区
文献类型:
--
作者:
Scott, Sophie K.;McGettigan, Carolyn;Eisner, Frank

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言语知觉的运动理论认为,运动系统的激活是言语知觉的关键。然而,言语感知和理解的缺陷并不局限于运动皮层的损伤,很少有功能成像研究显示运动皮层在言语感知期间的活动,并且运动皮层被许多不同的声音类别强烈激活。在这里,我们评估的替代作用的运动皮层在口头交流,并建议在感觉运动处理会话中的具体作用。我们认为,运动皮层激活是必不可少的联合讲话,特别是对时间的话轮。
The motor theory of speech perception assumes that activation of the motor system is essential in the perception of speech. However, deficits in speech perception and comprehension do not arise from damage that is restricted to the motor cortex, few functional imaging studies reveal activity in motor cortex during speech perception, and the motor cortex is strongly activated by many different sound categories. Here, we evaluate alternative roles for the motor cortex in spoken communication and suggest a specific role in sensorimotor processing in conversation. We argue that motor-cortex activation it is essential in joint speech, particularly for the timing of turn-taking.
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