Selective attention to human voice enhances brain activity bilaterally in the superior temporal sulcus
Selective attention to human voice enhances brain activity bilaterally in the superior temporal sulcus
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DOI：
10.1016/j.brainres.2005.11.103
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发表时间：
2006-02-23
期刊：
影响因子：
2.9
通讯作者：
Näätänen, R
中科院分区：
文献类型：
--
作者：
Alho, K;Vorobyev, VA;Näätänen, R
应用正电子发射断层扫描（PET）技术对10名健康男性志愿者的局部脑血流量进行了测定。他们听到两个双耳同时传递的故事，一个是男性的声音，另一个是女性的声音。第三个故事是在同一时间作为一个文本运行在屏幕上。受试者被要求每次安静地听一个故事。在额外的休息条件下，没有故事被传递。PET数据显示，与阅读条件相比，在语音-听力条件下的大脑活动在双侧前上级颞沟中增强，包括据报道对人类声音特别敏感的皮层区域。先前关于对非语言声音和视觉对象的注意力的研究反过来表明，前额叶激活可能与注意力控制功能有关。然而，将当前的听演讲和阅读的条件相互比较，或者与静息条件比较，结果表明，除了下额叶皮层的激活外，没有前额叶活动，这种激活可能与对所听故事的语义和句法处理有关。因此，与其他需要注意力的任务相比，即使是在分散注意力的环境中，言语倾听和阅读对前额叶控制功能的依赖似乎更少，这可能是因为对言语和书面文本的选择性注意是每天排练的过度学习行为。(c)2005 Elsevier B. V.保留所有权利。
Regional cerebral blood flow was measured with positron emission tomography (PET) in 10 healthy male volunteers. They heard two binaurally delivered concurrent stories, one spoken by a male voice and the other by a female voice. A third story was presented at the same time as a text running on a screen. The subjects were instructed to attend silently to one of the stories at a time. In an additional resting condition, no stories were delivered. PET data showed that in comparison with the reading condition, the brain activity in the speech-listening conditions was enhanced bilaterally in the anterior superior temporal sulcus including cortical areas that have been reported to be specifically sensitive to human voice. Previous studies on attention to non-linguistic sounds and visual objects, in turn, showed prefrontal activations that are presumably related to attentional control functions. However, comparisons of the present speech-listening and reading conditions with each other or with the resting condition indicated no prefrontal activity, except for an activation in the inferior frontal cortex that was presumably associated with semantic and syntactic processing of the attended story. Thus, speech listening, as well as reading, even in a distracting environment appears to depend less on the prefrontal control functions than do other types of attention-demanding tasks, probably because selective attention to speech and written text are over-learned actions rehearsed daily. (c) 2005 Elsevier B.V. All rights reserved.