Distributed cortical networks for focused auditory attention and distraction.
Distributed cortical networks for focused auditory attention and distraction.
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用于集中听觉注意力和分散注意力的分布式皮质网络。
DOI：
10.1016/j.neulet.2007.01.077
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发表时间：
2007
影响因子：
2.5
通讯作者：
Alho,Kimmo
中科院分区：
文献类型：
--
作者：
Rinne,Teemu;Kirjavainen,Siiri;Salonen,Oili;Degerman,Alexander;Kang,Xiaojian;Woods,DavidL;Alho,Kimmo
我们使用行为测量和功能性磁共振成像（fMRI）来研究参数变化的任务无关的音高变化在出席的声音上的正确性辨别性能和大脑皮层表面地图的活动的影响。10名受试者辨别音调响度的序列，也包括不频繁的任务无关的音高变化。与以往的研究结果一致，在响度辨别任务中，与任务无关的音高变化损害了表现。听觉刺激、注意力增强的声音处理和响度辨别任务中的运动反应激活了双侧颞上区（听觉皮层）和顶叶下区以及左半球（用于反应的手的对侧）运动区。大的音高变化与右半球颞上激活以及额叶和沿着顶内沟的广泛双侧激活有关。响度辨别和分散注意力的音高变化激活了右侧颞上回、左侧内侧额叶皮层、左侧中央前回和左侧顶叶下皮层的共同区域。
We used behavioral measures and functional magnetic resonance imaging (fMRI) to study the effects of parametrically varied task-irrelevant pitch changes in attended sounds on loudness-discrimination performance and brain activity in cortical surface maps. Ten subjects discriminated tone loudness in sequences that also included infrequent task-irrelevant pitch changes. Consistent with results of previous studies, the task-irrelevant pitch changes impaired performance in the loudness discrimination task. Auditory stimulation, attention-enhanced processing of sounds and motor responding during the loudness discrimination task activated supratemporal (auditory cortex) and inferior parietal areas bilaterally and left-hemisphere (contralateral to the hand used for responding) motor areas. Large pitch changes were associated with right hemisphere supratemporal activations as well as widespread bilateral activations in the frontal lobe and along the intraparietal sulcus. Loudness discrimination and distracting pitch changes activated common areas in the right supratemporal gyrus, left medial frontal cortex, left precentral gyrus, and left inferior parietal cortex.