Activity in the left auditory cortex is associated with individual impulsivity in time discounting
Activity in the left auditory cortex is associated with individual impulsivity in time discounting
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DOI：
10.1109/embc.2015.7319917
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发表时间：
2015-11
期刊：
影响因子：
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通讯作者：
R. Han;Taiki Takahashi;A. Miyazaki;T. Kadoya;Shinya Kato;K. Yokosawa
中科院分区：
文献类型：
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作者：
R. Han;Taiki Takahashi;A. Miyazaki;T. Kadoya;Shinya Kato;K. Yokosawa
冲动决定了个人的决策行为。因此，它可以反映消费行为和成瘾风险，从而也是社会活动的基础。神经科学已被应用于解释社会活动;然而，控制冲动的大脑功能仍然不清楚。众所周知，冲动性与个人的时间感知有关，即，一个人如果认为某个物理时间更长，那他就是冲动的。在这里，我们表明，左听觉皮层的活动与个人冲动。对12名健康右利手成年人进行了冲动性问卷调查，并采用脑磁图记录了连续性纯音时双侧大脑半球听觉皮层的活动。左侧听觉皮层的持续活动与冲动性显著相关，即持续活动越大，冲动性越强。结果表明，左侧听觉皮层代表时间知觉，可能是因为该区域参与言语知觉，它间接代表冲动。
Impulsivity dictates individual decision-making behavior. Therefore, it can reflect consumption behavior and risk of addiction and thus underlies social activities as well. Neuroscience has been applied to explain social activities; however, the brain function controlling impulsivity has remained unclear. It is known that impulsivity is related to individual time perception, i.e., a person who perceives a certain physical time as being longer is impulsive. Here we show that activity of the left auditory cortex is related to individual impulsivity. Individual impulsivity was evaluated by a self-answered questionnaire in twelve healthy right-handed adults, and activities of the auditory cortices of bilateral hemispheres when listening to continuous tones were recorded by magnetoencephalography. Sustained activity of the left auditory cortex was significantly correlated to impulsivity, that is, larger sustained activity indicated stronger impulsivity. The results suggest that the left auditory cortex represent time perception, probably because the area is involved in speech perception, and that it represents impulsivity indirectly.