眨眼频率预测了假性忽视的个体差异。
Eye-blink rate predicts individual differences in pseudoneglect.
机构信息
Waisman Laboratory for Brain Imaging and Behavior, University of Wisconsin, Madison, USA.
出版信息
Neuropsychologia. 2010 Apr;48(5):1265-8. doi: 10.1016/j.neuropsychologia.2009.12.027. Epub 2009 Dec 29.
Abstract
Most healthy individuals display a subtle spatial attentional bias, exhibiting relative inattention for stimuli on one side of the visual field, a phenomenon known as pseudoneglect. Prior work in animals and patients has implicated dopamine in spatial attention asymmetries. The current study therefore examined - in healthy individuals - the relationship between the attentional bias and spontaneous eye-blink rate (EBR), a putative measure of central dopaminergic function. We found that those individuals, who blinked more often under resting conditions, displayed greater preference for the right side of the visual display in a subsequent attention task. This finding may support the idea that the observed attentional bias in healthy individuals reflects asymmetries in dopaminergic circuits, and corroborates previous findings implicating dopamine in spatial attention.
摘要
大多数健康个体表现出细微的空间注意偏向，即对视野一侧的刺激相对不注意，这种现象被称为假性忽视。先前在动物和患者中的研究表明，多巴胺与空间注意不对称有关。因此，本研究在健康个体中检查了注意力偏向与自发眼跳率（EBR）之间的关系，EBR 是一种中枢多巴胺能功能的假定测量指标。我们发现，在休息状态下眨眼更频繁的个体，在随后的注意力任务中对视觉显示的右侧表现出更大的偏好。这一发现可能支持这样一种观点，即健康个体中观察到的注意力偏向反映了多巴胺能回路的不对称性，并证实了先前关于多巴胺在空间注意力中的作用的发现。
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