title: Frontostriatal response to set switching is moderated by reward sensitivity.
abstract: The reinforcement sensitivity theory (RST) relates individual differences in reward sensitivity to the activation of the behavioral approach system (BAS). Dopamine-related brain structures have been repeatedly associated with reward processing, but also with cognitive processes such as task switching. In the present study, we examined the association between reward sensitivity and the event-related fMRI BOLD response with set switching in 31 males. As expected, the right inferior frontal cortex (rIFG) and the striatum (i.e. the left putamen) were involved in set-switching activity for the overall sample. Interindividual differences in Gray's reward sensitivity were related to stronger activity in the rIFG and the ventral striatum. Thus, trait reward sensitivity contributed to the modulation of brain responsiveness in set-switching tasks. Having considered previous research, we propose that higher BAS activity is associated with a stronger reward to process a better implementation of goal-directed tasks and the diminished processing of secondary cues.
authors: Department of Psicologia, Campus Riu Sec, Fac. Ciències Humanes i Socials, Universitat Jaume I, E-12071 Castelló, Spain. avila@psb.uji.es
authors: César
authors: C
authors: Avila
authors: Gabriele
authors: G
authors: Garbin
authors: Ana
authors: A
authors: Sanjuán
authors: Cristina
authors: C
authors: Forn
authors: Alfonso
authors: A
authors: Barrós-Loscertales
authors: Juan Carlos
authors: JC
authors: Bustamante
authors: Aina
authors: A
authors: Rodríguez-Pujadas
authors: Vicente
authors: V
authors: Belloch
authors: Maria Antònia
authors: MA
authors: Parcet
mesh_terms: D000328:Adult; D001288:Attention / Q000502:physiology*; D001931:Brain Mapping; D003342:Corpus Striatum / Q000098:blood supply / Q000502:physiology*; D005625:Frontal Lobe / Q000098:blood supply / Q000502:physiology*; D007839:Functional Laterality; D006801:Humans; D007091:Image Processing, Computer-Assisted; D007206:Individuality; D008279:Magnetic Resonance Imaging; D008297:Male; D010100:Oxygen / Q000097:blood; D010364:Pattern Recognition, Visual; D010775:Photic Stimulation; D011930:Reaction Time; D012201:Reward; D012718:Set, Psychology; D013997:Time Factors; D055815:Young Adult
chemical_list: D010100:Oxygen