期刊
INTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY
卷 107, 期 -, 页码 63-71出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ijpsycho.2016.07.002
关键词
Partial inhibition; Response inhibition; Event-related potential; N2; P3; Go/nogo
资金
- Australian Postgraduate Award
The neural response following the partial inhibition of responses can provide insight into the processes underlying response inhibition. We examined the N2 and P3 on trials where participants correctly responded to go stimuli, successfully inhibited their response to nogo stimuli, and nogo trials where they initiated but did not complete their response (partial inhibitions) in an adult sample (N = 24, M(age) = 21.17, SD(age) = 3.52). An enhanced and delayed N2 was observed on partially inhibited compared to successfully inhibited nogo trials. Further analysis showed that this modulation was error-related. An enhanced central P3 was observed following successful inhibitions compared to correct go trials, but not following partial inhibitions. The results suggest that the central P3 enhancement is specific to the complete and successful inhibition of responses. Therefore, the absence of a central P3 on partial inhibitions could reflect insufficient inhibition or a monitored failure in inhibiting the response. Although, our findings provide support for the role of P3 in response inhibition, it raises questions about the processes involved in the subsequent inhibition or correction of the erroneous response. Further research examining the neural response following both partial and unsuccessful inhibitions could provide insight regarding these processes. (C) 2016 Elsevier B.V. All rights reserved.
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