Electrophysiological dynamics reveal distinct processing of stimulus-stimulus and stimulus-response conflicts. Academic Article uri icon


  • The present study examined electroencephalogram profiles on a novel stimulus-response compatibility (SRC) task in order to elucidate the distinct brain mechanisms of stimulus-stimulus (S-S) and stimulus-response (S-R) conflict processing. The results showed that the SRC effects on reaction times (RTs) and N2 amplitudes were additive when both S-S and S-R conflicts existed. We also observed that, for both RTs and N2 amplitudes, the conflict adaptation effects-the reduced SRC effect following an incongruent trial versus a congruent trial-were present only when two consecutive trials involved the same type of conflict. Time-frequency analysis revealed that both S-S and S-R conflicts modulated power in the theta band, whereas S-S conflict additionally modulated power in the alpha and beta bands. In summary, our findings provide insight into the domain-specific conflict processing and the modular organization of cognitive control.

published proceedings

  • Psychophysiology

author list (cited authors)

  • Li, Q. i., Wang, K., Nan, W., Zheng, Y. a., Wu, H., Wang, H., & Liu, X.

citation count

  • 17

complete list of authors

  • Li, Qi||Wang, Kai||Nan, Weizhi||Zheng, Ya||Wu, Haiyan||Wang, Hongbin||Liu, Xun

publication date

  • April 2015