A forced-attention dichotic listening fMRI study on 113 subjects
A forced-attention dichotic listening fMRI study on 113 subjects
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DOI：
10.1016/j.bandl.2012.03.004
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发表时间：
2012-06-01
影响因子：
2.5
通讯作者：
Westerhausenad, Rene
中科院分区：
文献类型：
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作者：
Kompus, Kristiina;Specht, Karsten;Westerhausenad, Rene
我们使用经典二分听力范式的变体以及辅音-元音音节的成对呈现，报告了 113 名受试者关于注意力和认知控制的功能磁共振成像和行为数据。当受试者处于 MR 扫描仪中时，音节刺激以块设计呈现。受试者被指示注意并报告左耳或右耳刺激。假设是，注意左耳刺激（FL 条件）会引起认知冲突，需要认知控制过程，而在注意右耳刺激（FR 条件）时则不会出现这种情况，因为在二分法情况下右耳刺激的感知显着性。 FL 条件导致左侧前额下回和尾状核明显激活，而右侧额下回和尾状核在 FL 和 FR 条件以及非指令 (NF) 基线条件下均被激活。 (C) 2012 Elsevier Inc. 保留所有权利。
We report fMRI and behavioral data from 113 subjects on attention and cognitive control using a variant of the classic dichotic listening paradigm with pairwise presentations of consonant-vowel syllables. The syllable stimuli were presented in a block-design while subjects were in the MR scanner. The subjects were instructed to pay attention to and report either the left or right ear stimulus. The hypothesis was that paying attention to the left ear stimulus (FL condition) induces a cognitive conflict, requiring cognitive control processes, not seen when paying attention to the right ear stimulus (FR condition), due to the perceptual salience of the right ear stimulus in a dichotic situation. The FL condition resulted in distinct activations in the left inferior prefrontal gyrus and caudate nucleus, while the right inferior frontal gyrus and caudate were activated in both the FL and FR conditions, and in a non-instructed (NF) baseline condition. (C) 2012 Elsevier Inc. All rights reserved.