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Alternative TitleStudy of event-related potential on the visual attention of aging under region cues
宋为群; 宋为明; 杜巨豹; 陈真; 潘钰; 吴东宇; 王茂斌; 罗跃嘉
Source Publication中华老年医学杂志
Other AbstractObjective To investigate the brain mechanisms of aging of the visual attention. Methods Through the precue-target visual search paradigm using the event-related potentials technique,16 young and 16 elderly subjects participated the electrophysiological experiment.The background was comprised of three homocentric black circles and eight English capital letters consisted of each circle.The letter “T” was designed as the target stimulus.T was a target only when it located the circle clued to the same size of the precue.For example,when the cue was the “large”,“T” may appear within 3 circles.When the cue was the “median”,“T” may appear within either the median or small circles.When the cue was small,the target “T” may appear only within the small circle. Results The reaction time of the two groups of subjects became quick with the reduction of the cue scale,while the amplitudes of P1 and N1 components of event-related potentials increased with the decrease of the cue scale.Old subjects showed longer response time than did young subjects,and the posterior P1 component was enhanced significantly and N1 component was inhibited obviously.The P2 component was manifested as significantly inhibitory effect not only in the amplitude but also in the abnormal and unstable waveform.Conclusions The cognitive function of elderly subjects declines in the research of target stimuli,which suggests that the age-related changes could lead to deficit in the posterior area of the brain to visual spatial attention (involuntary attention).
Keyword视觉 注意力 诱发电位 衰老
Subject Area老年心理学
Indexed ByCSCD
Funding Organization国家自然科学基金,国家专项基金,中国科学院资助项目,北京市自然科学基金,北京市委组织部优秀人才基金
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GB/T 7714
宋为群,宋为明,杜巨豹,等. 范围提示下视空间注意老龄化的事件相关电位研究[J]. 中华老年医学杂志,2006,25(5):346-349.
APA 宋为群.,宋为明.,杜巨豹.,陈真.,潘钰.,...&罗跃嘉.(2006).范围提示下视空间注意老龄化的事件相关电位研究.中华老年医学杂志,25(5),346-349.
MLA 宋为群,et al."范围提示下视空间注意老龄化的事件相关电位研究".中华老年医学杂志 25.5(2006):346-349.
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