期刊
NEUROREPORT
卷 22, 期 11, 页码 554-558出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/WNR.0b013e328348c731
关键词
aging; audiovisual; cross-sensory; event-related potential; suppression; temporal order; temporal window
资金
- Technology Research for Independent Living centre
- Intel
- General Electrics
- Industrial Development Agency, Ireland
- Trinity College Institute for Neuroscience
We investigated the crossmodal temporal discrimination deficit characterizing older adults and its event-related potential (electroencephalogram) correlates using an audiovisual temporal order judgment task. Audiovisual stimuli were presented at stimulus onset asynchronies (SOA) of 70 or 270 ms. Older were less accurate than younger adults with an SOA of 270ms but not 70 ms. With an SOA of 270ms only, older adults had smaller posterior P1 and frontocentral N1 amplitudes for visual stimuli in auditory-visual trials and auditory stimuli in visual-auditory trials, respectively. These results suggest a deficit in cross-sensory processing with aging reflected at the behavioural and neural level, and suggest an impairment in switching between modalities even when the inputs are separated by long temporal intervals. NeuroReport 22:554-558 (C) 2011 Wolters Kluwer Health vertical bar Lippincott Williams & Wilkins.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据