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Topography of feedback-related negativity (FRN) and its modulation by group and valence.

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posted on 2012-10-17, 02:30 authored by Liam Mason, Noreen O'Sullivan, Richard P. Bentall, Wael El-Deredy

a) Topographical plot of the 50/50 difference wave (loss minus gain; 260–320 ms) shows typical frontocentral distribution of FRN. b) FRN magnitudes for reward (gain) and punishment (loss) across groups. The Lo-hyp group show similar FRN morphology to the Mid-hyp group for losses, but larger FRN for rewards (more loss-like) suggesting reduced reward sensitivity. FRN is reduced in the Hi-hyp group for both gains and losses, suggesting that both outcomes are subjectively experienced as more advantageous (i.e. more gain-like), relative to the other groups.

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