Conflicts Processing among Multiple Frames of Reference: An ERP Study


People rely on various frames of reference (FORs), such as egocentric (EFOR) and intrinsic (IFOR), to represent spatial information. The present study examined electroencephalogram profiles on a two-cannon task, which could regulate the conflict of IFOR-IFOR (red cannon, blue cannon) and IFOR-EFOR (target cannon, observer), to elucidate the brain mechanisms of FOR conflict processing by using event-related potentials (ERPs). Results showed that both of the conflicts occurred in the reaction time (RT) and there was an interaction between them. ERP results showed more negative amplitudes on N2 (276-326 ms) and P3 (396-726 ms) for IFOR-IFOR conflict of the 180° cannon angle condition and EFOR-IFOR conflict of the target cannon point-down condition. What’s more, there was also an interaction between these two conflicts on the P3 amplitudes (561-726 ms). In summary, our findings shed new light on the domain-specific conflict monitoring and domain-general executive control for the IFOR-IFOR and EFOR-IFOR conflicts.

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