Event-related potentials during preattentional processing of color stimuli

被引：12
作者：
Liu, Tongran [1 ,2 ]
Shi, Jiannong [1 ]
机构：
[1] Chinese Acad Sci, Inst Psychol, Beijing 100101, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing, Peoples R China
来源：
NEUROREPORT | 2008年 / 19卷 / 12期
关键词：
event-related potentials; mismatch negativity; preattentional processing; vision;
D O I：
10.1097/WNR.0b013e328309a0dd
中图分类号：
Q189 [神经科学];
学科分类号：
071006 ;
摘要：
To investigate whether visual mismatch negativity (VMMN) could be evoked in the preattentional condition, we designed an oddball task with different red color stimuli in visual modality. Electroencephalograms were recorded and VMMN and N2-P3 complex waveforms were analyzed. The results indicated that VMMN generated at occipital region with 110-180 ms peak latency, and N2b and P3a were just following VMMN with 170-300 and 400-450ms latencies, respectively. VMMN, N2b, and P3a components were all affected by the amount of deviations between the standard stimuli and deviant stimuli. This study further proved that VMMN existed under hard detection condition in color-related visual modality, and this design distinguished early sensory processing and late sensory processing successfully as well.
引用
收藏
页码：1221 / 1225
页数：5
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