The Study of Spatial Selective Attention Effects by Event-related Potentials
The effects of visuospatial selective attention on information processing have been investigated by means of highdensity event-related brain potentials (ERP) while the subjects were instructed to covertly attend to one side of the visual field with fixation on the center of the screen. Previous studies have demonstrated the attention-related modulation of the P1 (scalppositive waves from 90-130 ms) and N1 (scalp-negative waves from 160-200 ms) component of ERP recorded from the occipital scalp areas contralateral to the direction of attention. In our study, the additional modulation of the amplitude of P2 component (scalp-positive waves from 220-260 ms) indicates that not only the short-latency early ERP component was affected by spatial attention, but also the late component is modulated, thus it can serve as proof supporting late selection theory.
Meng Wang Ling Li Jinxiang Zhang
Key Laboratory for NeuroIinformation of Ministry of Education School of Life Science and Technology, University of Electronic Science and Technology of China Chengdu, China
国际会议
成都
英文
1-4
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）