TY - JOUR
T1 - The effects of reward magnitude on reward processing
T2 - An averaged and single trial event-related potential study
AU - Meadows, Caroline C.
AU - Gable, Philip A.
AU - Lohse, Keith R.
AU - Miller, Matthew W.
N1 - Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2016/7/1
Y1 - 2016/7/1
N2 - From a neurobiological and motivational perspective, the feedback-related negativity (FRN) and reward positivity (RewP) event-related potential (ERP) components should increase with reward magnitude (reward associated with valence (success/failure) feedback). To test this hypothesis, we recorded participants' electroencephalograms while presenting them with potential monetary rewards ($0.00-$4.96) pre-trial for each trial of a reaction time task and presenting them with valence feedback post-trial. Averaged ERPs time-locked to valence feedback were extracted, and results revealed a valence by magnitude interaction for neural activity in the FRN/RewP time window. This interaction was driven by magnitude affecting RewP, but not FRN, amplitude. Moreover, single trial ERP analyses revealed a reliable correlation between magnitude and RewP, but not FRN, amplitude. Finally, P3b and late positive potential (LPP) amplitudes were affected by magnitude. Results partly support the neurobiological (dopamine) account of the FRN/RewP and suggest motivation affects feedback processing, as indicated by multiple ERP components.
AB - From a neurobiological and motivational perspective, the feedback-related negativity (FRN) and reward positivity (RewP) event-related potential (ERP) components should increase with reward magnitude (reward associated with valence (success/failure) feedback). To test this hypothesis, we recorded participants' electroencephalograms while presenting them with potential monetary rewards ($0.00-$4.96) pre-trial for each trial of a reaction time task and presenting them with valence feedback post-trial. Averaged ERPs time-locked to valence feedback were extracted, and results revealed a valence by magnitude interaction for neural activity in the FRN/RewP time window. This interaction was driven by magnitude affecting RewP, but not FRN, amplitude. Moreover, single trial ERP analyses revealed a reliable correlation between magnitude and RewP, but not FRN, amplitude. Finally, P3b and late positive potential (LPP) amplitudes were affected by magnitude. Results partly support the neurobiological (dopamine) account of the FRN/RewP and suggest motivation affects feedback processing, as indicated by multiple ERP components.
KW - Approach motivation
KW - Dopamine
KW - Late positive potential
KW - P3b
KW - Reward positivity
UR - http://www.scopus.com/inward/record.url?scp=84975496037&partnerID=8YFLogxK
U2 - 10.1016/j.biopsycho.2016.06.002
DO - 10.1016/j.biopsycho.2016.06.002
M3 - Article
C2 - 27288743
AN - SCOPUS:84975496037
SN - 0301-0511
VL - 118
SP - 154
EP - 160
JO - Biological Psychology
JF - Biological Psychology
ER -