ABSTRACT
Objective To examine the amplitude differences of feedback related negativity ( FRN) and P300 among people with different levels of behavioral inhibition system(BIS)/behavioral activation sys-tem( BAS) in feedback stage in a conflict experimental paradigm.Methods According to Behavioral Inhibi-tion/Activation System Scale,the undergraduates were divided into high score or low score groups of BIS and BAS.Using event related potential (ERP) method,feedback related negativity (FRN) and P300 were col-lected and analyzed when they performed a conflict experimental paradigm which had correct or wrong feed-back.Results (1)The amplitudes of FRN(FRN for error feedback:(6.61±1.02)μV,FRN for correct feedback:(7.52±1.15)μV, F(1,20)=5.73, P=0.027)and P300(P300 for error feedback:(14.24±1.09)μV, P300 for correct feedback:(11.58±1.21)μV, F(1,20)=16.72, P=0.001) in BAS high and low score groups were significantly higher in error feedback.( 2) The amplitudes of FRN in BIS high and low score groups were significantly higher in error feedback(FRN for error feedback:(6.63±1.22)μV,FRN for correct feed-back:(8.22±1.24)μV, F(1,22)=17.35, P<0.01).(3) The amplitude of P300 in BIS low score group was higher than that in BIS high score group (BIS low score group:(15.66±1.13)μV,BIS high score group:(11.10±1.04)μV, F(1,22)=17.35, P<0.01).Conclusion BIS and BAS not only relate to approach and a-voidance motivation,but also closely relate to cognitive regulation.