We thank Adam R. Aron for discussions and feedback and the National Institutes of Health (UCSD Institute for Neural Computation training grant) for funding.
EEG signatures associated with stopping are sensitive to preparation
Article first published online: 14 JUN 2013
Copyright © 2013 Society for Psychophysiological Research
Volume 50, Issue 9, pages 900–908, September 2013
How to Cite
Greenhouse, I. and Wessel, J. R. (2013), EEG signatures associated with stopping are sensitive to preparation. Psychophysiology, 50: 900–908. doi: 10.1111/psyp.12070
- Issue published online: 15 AUG 2013
- Article first published online: 14 JUN 2013
- Manuscript Accepted: 18 APR 2013
- Manuscript Received: 21 DEC 2012
- National Institutes of Health
- Response inhibition;
- Cognitive control;
Preparing to stop may “prime” the neural mechanism for stopping and alter brain activity at the time of stopping. Much electroencephalography (EEG) research has studied the N2/P3 complex over frontocentral electrodes during outright stopping. Here, we used differential reward of the stop and go processes in a stop signal task to study the sensitivity of these EEG components to preparation. We found that (a) stopping was faster when it was rewarded; (b) the P3 amplitude was larger for successful versus failed stopping, and this difference was greater when stopping was rewarded over going; (c) the N2 component was observed only on failed stop trials; and (d) there was greater EEG coherence between frontocentral and occipitoparietal electrodes at 12 Hz during the initiation of a go response when stopping was rewarded over going. We propose that frontocentral cortical mechanisms active before and at the time of stopping are sensitive to preparation.