Mitchell Rachel L C, Phillips Louise H
School of Psychology and Clinical Language Sciences, University of Reading, Whiteknights Road, Reading, Berkshire, UK.
Neuropsychologia. 2007 Mar 2;45(4):617-29. doi: 10.1016/j.neuropsychologia.2006.06.030. Epub 2006 Sep 7.
In this review we evaluate the cognitive and neural effects of positive and negative mood on executive function. Mild manipulations of negative mood appear to have little effect on cognitive control processes, whereas positive mood impairs aspects of updating, planning and switching. These cognitive effects may be linked to neurochemistry: with positive mood effects mediated by dopamine while negative mood effects may be mediated by serotonin levels. Current evidence on the effects of mood on regional brain activity during executive functions, indicates that the prefrontal cortex is a recurrent site of integration between mood and cognition. We conclude that there is a disparity between the importance of this topic and awareness of how mood affects, executive functions in the brain. Most behavioural and neuroimaging studies of executive function in normal samples do not explore the potential role of variations in mood, yet the evidence we outline indicates that even mild fluctuations in mood can have a significant influence on neural activation and cognition.
在本综述中，我们评估了积极情绪和消极情绪对执行功能的认知及神经影响。对消极情绪的轻度操控似乎对认知控制过程影响甚微，而积极情绪则会损害更新、计划和转换等方面。这些认知效应可能与神经化学有关：积极情绪效应由多巴胺介导，而消极情绪效应可能由血清素水平介导。当前关于情绪对执行功能期间区域脑活动影响的证据表明，前额叶皮层是情绪与认知之间反复出现的整合部位。我们得出结论，该主题的重要性与对情绪如何影响大脑执行功能的认识之间存在差距。正常样本中大多数关于执行功能的行为和神经影像学研究并未探讨情绪变化的潜在作用，但我们概述的证据表明，即使是情绪的轻微波动也会对神经激活和认知产生重大影响。
