Attention-related modulation of activity in primary and secondary auditory cortex
Attention-related modulation of activity in primary and secondary auditory cortex
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DOI：
10.1097/00001756-199707280-00019
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发表时间：
1997-07-28
期刊：
影响因子：
1.7
通讯作者：
Rauschecker, JP
中科院分区：
文献类型：
--
作者：
Grady, CL;VanMeter, JW;Rauschecker, JP
我们使用功能性磁共振成像研究了听觉注意对大脑活动的影响。受试者听了三个单词列表，每个三次，并被要求计算他们在其中两次演讲中听到目标单词的次数。对于第三个人，他们听的话没有计数。与休息时相比，所有受试者在听力条件下的听觉皮层都显示出显著的激活区域。与无目标条件相比，在目标计数期间，左颞叶的激活明显更多，激活面积更大，特别是在联合皮层，在右半球也有类似的趋势。这些结果提供了证据的注意相关的增强激活幅度和程度在听觉皮层。
WE investigated the effects of auditory attention on brain activity using functional magnetic resonance imaging. Subjects listened to three word lists, three times each, and were instructed to count the number of times they heard a target word during two of these presentations. For the third, they listened to the words without counting. All subjects showed significant areas of activation in auditory cortex during the listening conditions compared to rest. There was significantly more activation and a larger area of activation, particularly in association cortex, in the left temporal lobe during counting of targets compared to the no-target conditions, with a similar trend in the right hemisphere. These results provide evidence of an attention-related enhancement of both activation magnitude and extent in auditory cortex.