Alexandrov Yuri I, Klucharev Vasily, Sams Mikko
V.B. Shvyrkov Laboratory of Neural Bases of Mind, Institute of Psychology, Russian Academy of Sciences, Yaroslavskaya str., 13, 129366, Moscow, Russia.
Int J Psychophysiol. 2007 Sep;65(3):261-71. doi: 10.1016/j.ijpsycho.2007.05.004. Epub 2007 May 18.
We examined how emotional context influences processing of emotionally neutral acoustic stimuli in the human auditory cortex. Nine subjects performed a simple discrimination task. In the positive-emotional trials correct performance was awarded with money, whereas in the negative-emotional trials, correct performance resulted in avoidance of the loss of money. Auditory stimuli were identical in both trial types. An event-related brain potential (ERP) N100 deflection, generated in the auditory cortex, was significantly larger in the negative as compared to the positive-emotional trials. This result demonstrates that emotional context influences early sensory-specific cortical processing. In addition, we found some evidence in favor of assumption that processing of positive visual feedback was faster in negative-emotional trials. This was reflected in the tendency for the latency of visual ERPs to be shorter in the latter case. We suggest that our results indicate that the systemic organization at all stages of deployment of behavior depends on emotional context. Dynamics of learning the discrimination task was also dependent on emotional context.
我们研究了情绪背景如何影响人类听觉皮层中对情绪中性听觉刺激的处理。九名受试者执行了一项简单的辨别任务。在积极情绪试验中，正确表现会获得金钱奖励，而在消极情绪试验中，正确表现则可避免金钱损失。两种试验类型中的听觉刺激是相同的。在听觉皮层产生的事件相关脑电位（ERP）N100偏转，在消极情绪试验中比在积极情绪试验中显著更大。这一结果表明情绪背景会影响早期特定感觉皮层的处理。此外，我们发现了一些证据支持这样的假设，即在消极情绪试验中对积极视觉反馈的处理更快。这在后一种情况下视觉ERP潜伏期更短的趋势中得到了体现。我们认为我们的结果表明行为部署所有阶段的系统组织取决于情绪背景。学习辨别任务的动态过程也依赖于情绪背景。
