%0 Journal Article
%T Study on the selection mechanism of attention by steady-state visually evoked potential<br>用稳态视觉诱发电位研究注意的选择机制
%A WU Zheng-hua
%A YAO De-zhong
%A <br>吴正华
%A 尧德中
%J 生物物理学报
%D 2006
%I 
%X It is well known that attention can modulate the processing of cognitive task,and can be seen as a choice of the external stimulus.There exist two theories about the mechanism of the attention choice:early choice or late choice.The steady-state visually evoked potential is a direct influence by the flicker,and is generated in the early phase of a task.If it can be modulated by attention,it can prove that the mechanism of the attention choice is early choice.In this paper,two different frequency flickers were used as the stimulus of steady-state visually evoked potential,and it was found that under two situations(attending the flicker and un-attending the flicker),attention could modulate the amplitude of steady-state visually evoked potential,and for different frequency flicker,this modulation was different too.
%K Steady-state visually evoked potential
%K Attention
%K The fundamental frequency
%K The second harmonic<br>稳态视觉诱发电位
%K 注意
%K 基频
%K 二次谐波
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=E0C9D9BBED813D6674AC13E942EAC86D&aid=C30D25CEE82594B0&yid=37904DC365DD7266&vid=BC12EA701C895178&iid=B31275AF3241DB2D&sid=366B1248A15658C5&eid=E0172F1A638CE984&journal_id=1000-6737&journal_name=生物物理学报&referenced_num=0&reference_num=15