Poster F44, Tuesday, March 28, 8:00 – 10:00 am, Pacific Concourse
Impulsivity and the Reward System: Negative and Positive Urgency are Associated with Neural Reward Sensitivity
Michelle Rogers1, Heather Soder1, Geoffrey Potts1; 1University of South Florida
Impulsivity is characterized by a propensity for risk-taking behavior and has been associated with neural reward sensitivity using Event-Related Potential (ERP) components thought to index reward system function: the Error and Feedback Related Negativities (ERN & FRN) and the Reward Positivity (RewP). Because impulsivity is a multidimensional construct, it is unknown if only some aspects of impulsivity are related to reward system function. This study examined the relationships between component constructs of impulsivity by relating different subscales of the UPPS-P self-report impulsivity assessment instrument – Positive and Negative Urgency (PU and NU), (Lack Of) Premeditation (LOPre), (Lack Of) Perseverance (LOPer), and Sensation Seeking (SS) Scale – to the reward-related ERPs in three different tasks: a passive reward prediction task with predicted and unpredicted rewards and non-rewards, a reward motivated flanker task, and the Balloon Analogue Risk Task. NU and PU had significant but weak associations with the reward-related ERPs across tasks and conditions, with NU predicting more positivity (enhanced RewP and/or reduced ERN/FRN) and PU predicting more negativity (reduced RewP and/or enhanced ERN/FRN). Generally it appears NU is associated with a greater reward response and PU with a greater punishment response. LOPre, LOPer, and SS had stronger, more task and condition specific associations, indicating that SS was associated with positive outcomes and LOPre with more negative outcomes. This suggests that different aspects of impulsivity are differentially associated with reward and punishment sensitivity.
Topic Area: EXECUTIVE PROCESSES: Other