Peng Xiao-hu, Wei Jing-han, Luo Yue-jia, Zhao Lun, Wang Guo-feng
Space Med Med Eng (Beijing). 2002 Aug;15(4):303-4.
Objective. To observe features of early component N170 during face recognition. Method. Scalp distribution, amplitude, and latency of N170 was recorded during face recognition tasks in 16 normal subjects. Result. N170 was elicited by the face stimuli in only half of the subjects and the amplitude was modulated by cognitive tasks. Conclusion. N170 reflects not only face structure encoding unit but also direct visual processing unit. Whether N170 reflects the specialty in face recognition needs further study. The latency of N170 showed left hemisphere dominance and the amplitude showed right hemisphere dominance, indicating that it is not pure right hemisphere dominance in face recognition.
目的。观察人脸识别过程中早期成分N170的特征。方法。记录16名正常受试者在人脸识别任务过程中N170的头皮分布、波幅和潜伏期。结果。仅半数受试者的面部刺激能引出N170，且波幅受认知任务调制。结论。N170不仅反映面部结构编码单元，还反映直接视觉处理单元。N170是否反映人脸识别的特异性有待进一步研究。N170的潜伏期表现为左半球优势，波幅表现为右半球优势，表明在人脸识别中并非单纯的右半球优势。
