01/03/2016 Medicine Psychology
DOI: 10.1016/j.dib.2015.11.060 SemanticScholar ID: 7620327 MAG: 2218372066

Feedback-related potentials in a gambling task with randomised reward

Publication Summary

Event-related potentials (ERPs) time-locked to decision outcomes are reported. Participants engaged in a gambling task (see [1] for details) in which they decided between a risky and a safe option (presented as different coloured shapes) on each trial (416 in total). Each decision was associated with (fully randomised) feedback about the reward outcome (Win/Loss) and its magnitude (varying as a function of decision response; 5–9 points for Risky decisions and 1–4 points for Safe decisions). Here, we show data demonstrating: (a) the influence of Win feedback in the preceding outcome (Outcomet−1) on activity related to the current outcome (Outcomet); (b) difference wave analysis for outcome expectancy- separating Expected Outcomes (consecutive Loss trials subtracted from consecutive reward) from Unexpected Outcomes (subtracting Losst−1Wint trials from Wint−1Losst trials); (c) difference waves separating Switch and Stay responses for Outcome Expectancy; (d) the effect of magnitude induced by decisions (Riskt vs. Safet) on Outcome Expectancy; and finally, (e) expectations reflected by response switch direction (Risk to Safe responses vs. Safe to Riskt) on the FRN at Outcomet.

CAER Authors

Avatar Image for Faisal Mushtaq

Dr. Faisal Mushtaq

University of Leeds - Associate Professor in Cognitive Neuroscience

Avatar Image for Mark Mon-Williams

Prof. Mark Mon-Williams

University of Leeds - Chair in Cognitive Psychology

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