先天性聋人在唇读时左颞叶皮质的弥散性激活。
Dispersed activation in the left temporal cortex for speech-reading in congenitally deaf people.
作者信息
MacSweeney M, Campbell R, Calvert G A, McGuire P K, David A S, Suckling J, Andrew C, Woll B, Brammer M J
机构信息
Department of Human Communication Science, University College London, UK.
出版信息
Proc Biol Sci. 2001 Mar 7;268(1466):451-7. doi: 10.1098/rspb.2000.0393.
Abstract
Does the lateral temporal cortex require acoustic exposure in order to become specialized for speech processing? Six hearing participants and six congenitally deaf participants, all with spoken English as their first langugage, were scanned using functional magnetic resonance imaging while performing a simple speech-reading task. Focal activation of the left lateral temporal cortex was significantly reduced in the deaf group compared with the hearing group. Activation within this region was present in individual deaf participants, but varied in location from person to person. Early acoustic experience may be required for regions within the left temporal cortex in order to develop into a coherent network with subareas devoted to specific speech analysis functions.
摘要
颞叶外侧皮质是否需要听觉暴露才能专门用于语音处理？六名听力正常的参与者和六名先天性耳聋的参与者，均以英语口语作为第一语言，在执行简单的唇读任务时接受了功能磁共振成像扫描。与听力组相比，聋人组左侧颞叶外侧皮质的局灶性激活明显减少。在个别聋人参与者中，该区域存在激活，但位置因人而异。左侧颞叶皮质内的区域可能需要早期听觉经验，才能发展成为一个连贯的网络，其中各子区域专门负责特定的语音分析功能。
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