The neural networks underlying endogenous auditory covert orienting and reorienting
The neural networks underlying endogenous auditory covert orienting and reorienting
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DOI：
10.1016/j.neuroimage.2005.10.050
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发表时间：
2006-04-15
期刊：
影响因子：
5.7
通讯作者：
Lee, R
中科院分区：
文献类型：
--
作者：
Mayer, AR;Harrington, D;Lee, R
通过发声、音乐或环境中的声音传达的听觉信息通常用于定向和引导注意力到超个人空间的不同位置。与我们对视觉系统的注意力的了解相比，对听觉空间的注意力的神经网络的了解仍然很少。本研究调查了顶叶-前额叶右半球网络是否控制声音位置的内源性定向和再定向，就像它控制视觉空间信息一样。17名健康成人在执行内源性听觉定向任务时接受了事件相关功能磁共振成像（FMRI），其中外围线索正确（有效）或错误（无效）指定即将到来的声音的位置。结果表明，在短时间和长时间刺激启动异步（SOAs）时，右侧楔前叶和双侧颞额叶网络介导了听觉注意的重定向。相比之下，在较短的SOA中，更自动的听觉重定向阶段与双侧下顶叶-额叶动眼神经网络的激活有关。这些发现表明，听觉注意的重新定向通常是由一个类似于视觉注意的下顶叶-额叶网络支持的，但在两个半球。然而，外围听觉线索似乎也会引发对声音空间位置的自动定向反应，随后会出现一段时间，减少对同一位置信息的处理。(c) 2005爱思唯尔公司版权所有。
Auditory information communicated through vocalizations, music, or sounds in the environment is commonly used to orient and direct attention to different locations in extrapersonal space. The neural networks subserving attention to auditory space remain poorly understood in comparison to our knowledge about attention in the visual system. The present study investigated whether a parietal-prefrontal right-hemisphere network controls endogenous orienting and reorienting of attention to the location of sounds just as it does for visual-spatial information. Seventeen healthy adults underwent event-related functional magnetic resonance imaging (FMRI) while performing an endogenous auditory orienting task, in which peripheral cues correctly (valid) or incorrectly (invalid) specified the location of a forthcoming sound. The results showed that a right precuneus and bilateral temporal-frontal network mediated the reorienting of auditory attention at both short and long stimulus onset asynchronies (SOAs). In contrast, the more automatic stage of auditory reorienting at the shorter SOA was associated with activation in a bilateral inferior parietal-frontal oculomotor network. These findings suggest that the reorienting of auditory attention is generally supported by a similar inferior parietal-frontal network as visual attention, but in both hemispheres. However, peripheral auditory cues also appear to elicit an automatic orienting response to the spatial location of a sound followed by a period of reduced processing of information that occurs in the same location later in time. (c) 2005 Elsevier Inc. All rights reserved.