知觉性注意与反思性注意过程中大脑活动的年龄差异。
Age differences in brain activity during perceptual versus reflective attention.
作者信息
Mitchell Karen J, Johnson Matthew R, Higgins Julie A, Johnson Marcia K
机构信息
Department of Psychology, Yale University, PO Box 208205, New Haven, CT 06520-8205, USA.
出版信息
Neuroreport. 2010 Mar 10;21(4):293-7. doi: 10.1097/WNR.0b013e32833730d6.
Abstract
This functional magnetic resonance imaging study presented participants with a face and scene simultaneously on each trial, and assessed the impact of perceptual versus reflective selective attention on activity in parahippocampal place area. Young and older adults showed equivalent activation in parahippocampal place area when cued to attend to the scene when the stimuli were perceptually present and when cued to refresh (briefly think about) the scene after the stimuli were no longer present. The groups also showed equivalent deactivation when cued to attend to the face when the stimuli were perceptually present. However, older adults showed less deactivation than young adults when cued to refresh the face, providing evidence for greater age-related disruption of reflective than perceptual selective attention.
摘要
这项功能磁共振成像研究在每次试验中同时向参与者呈现一张面孔和一个场景，并评估了知觉性与反思性选择性注意对海马旁回位置区活动的影响。当在刺激在知觉上呈现时被提示关注场景，以及在刺激不再呈现后被提示回想（短暂思考）场景时，年轻人和老年人在海马旁回位置区表现出同等程度的激活。当在刺激在知觉上呈现时被提示关注面孔时，两组也表现出同等程度的失活。然而，当被提示回想面孔时，老年人的失活程度低于年轻人，这为与年龄相关的反思性选择性注意比知觉性选择性注意受到更大干扰提供了证据。
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