Perceptual processing of cartoon face and real face expression of college students: an ERP study / 中华行为医学与脑科学杂志

ABSTRACT

Objective:To explore the difference of perceptual processing in ERP between cartoon faces and real faces.Methods:Thirty college students were selected and adopted the face recognition paradigm.The independent variables were face type (real, cartoon) and emotional type (positive, neutral, negative). The dependent variables were response time and the amplitude and latency of ERP data.SPSS 22.0 software was used for repeated measurement analysis of variance.Results:The reaction time of cartoon expression ((455.58±55.18)ms) was shorter than that of real face ((471.49±63.02)ms) of college students.There was no significant difference in N170 amplitude and latency among different faces and expressions(all P>0.05). The vertex positive potential VPP latency of positive real faces ((159.89±13.93)ms) was shorter than that of positive cartoon faces ((165.68±14.35)ms) ( PVPP<0.05). It was easily affected by perceptual load, but negative emotion was not affected by it.In the late processing stage of late positive potential(LPP), the amplitude of positive emotional real face ((10.4±1.22)μV) was higher than that of cartoon ((4.26±0.53)μV), and that of negative emotional cartoon face ((3.84±0.36)μV) was higher than that of real face ((1.9±0.24)μV) ( PLPP<0.05). Conclusion:There are no differences in early stage N170, and the late processing stage, the real faces have an overall advantageous effect on positive emotion, and the local characteristics of negative emotional cartridge wells are more superior.