title: P300, not feedback error-related negativity, manifests the waiting cost of receiving reward information.
abstract: Previous studies have investigated how temporal discounting influences reward processing in the human brain; however, it remains unclear whether a short delay in presenting an outcome affects brain activity related to reward processing that is indexed by the two event-related potential components: the feedback error-related negativity (fERN) and P300 components. The present study used a revised simple gambling task and manipulated the waiting time before reward presentation. Behavioral data showed that participants did not respond differently between conditions; however, they reported more negative emotion under long-waiting conditions than under short-waiting conditions. Event-related potential results showed that fERN was not significantly different between the two conditions, whereas the short-waiting feedback elicited a notably larger P300 amplitude than the long-waiting feedback, particularly in frontal-central regions. The present study shows that P300, not fERN, reflects high-level motivated evaluation of waiting cost in such a decision-making task.
authors.affiliation: aSchool of Psychology, Liaoning Normal University, Dalian bSchool of Education Science, Sichuan Normal University, Chengdu, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Wang
authors.forename: Jing
authors.initials: J
authors.lastname: Chen
authors.forename: Yi
authors.initials: Y
authors.lastname: Lei
authors.forename: Peng
authors.initials: P
authors.lastname: Li
mesh_terms: D000293:Adolescent; D000704:Analysis of Variance; D001921:Brain / Q000502:physiology*; D004569:Electroencephalography; D018913:Event-Related Potentials, P300; D005071:Evoked Potentials; D030141:Feedback, Psychological / Q000502:physiology*; D005260:Female; D005715:Gambling; D006801:Humans; D008297:Male; D009483:Neuropsychological Tests; D011930:Reaction Time; D012201:Reward; D013997:Time Factors; D055815:Young Adult