Influence of reference electrode on face recognition event-related potential components

doi:10.3969/j.issn.2095-4344.1694

Abstract

Abstract:

BACKGROUND: Selecting the electroencephalograph reference electrode is a key step in the analysis of event-related potential, but there are few studies on the influence of reference electrode event-related potential components.

OBJECTIVE: To compare and analyze the effects of mean reference, left ear papillary reference and zero reference on face recognition event-related potential components were analyzed from the perspectives of statistics and scalp potential topology.

METHODS: The electroencephalograph data were from the multimodal human neuroimaging dataset in the Open fMRI database. Nineteen normal or normal corrected vision volunteers underwent visual stimulation test, and the visual stimulation factors were strange and disrupt faces. The latency and amplitude of N170 under three references (mean reference, left ear papillary reference and zero reference) was analyzed. The brainstorm potential topology and source localization calculation were performed using brainstorm software. Finally, the experimental results under the three references were compared and analyzed.

RESULTS AND CONCLUSION: (1) Compared with disturbing the face, the strange face-induced event-related potential N170 had a shorter latency and larger N170 amplitude. There was no significant difference in the N170 latency, and the N170 amplitude has a significant difference. (2) Topological results indicated that the right temporal lobe of the brain was more intense than the left occipital lobe under the same stimuli, and only the REST reference could best reveal the right temporal and prefrontal regions of the brain in strange faces and disturbing people. There is a significant difference in face stimulation. (3) These results show that the electroencephalograph data obtained by REST reference is more realistic and accurate, which helps us to further study the neural mechanism of face recognition, and provides a basis for the selection of experimental reference electrodes for face recognition.

Key words: electroencephagraph, reference electrode, N170, face recognition, source localization, right frontal lobe, prefrontal lobe, face stimulation, the National Natural Science Foundation of China

CLC Number:

R444

Wang Yi, Huang Hua, Lai Hongyu, Zhang Junpeng. Influence of reference electrode on face recognition event-related potential components[J]. Chinese Journal of Tissue Engineering Research, 2019, 23(18): 2909-2914.

Figures/Tables 5

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