Affective personality predictors of disrupted reward learning and pursuit in major depressive disorder

PSYCHIATRY RESEARCH

卷:230

Article

DelDonno, Sophie R.¹  Weldon, Anne L.²  Crane, Natania A.¹  Passarotti, Alessandra M.¹  Pruitt, Patrick J.³  Gabriel, Laura B.²  Yau, Wendy²  Meyers, Kortni K.²  Hsu, David T.³  Taylor, Stephen F.³  Heitzeg, Mary M.³  Herbener, Ellen¹  Shankman, Stewart A.¹  Mickey, Brian J.³  Zubieta, Jon-Kar^2,3,4  Langenecker, Scott A.^1,2 

[1] Univ Illinois, Dept Psychiat, Chicago, IL 60612 USA

[2] Univ Michigan, Dept Psychiat, Ann Arbor, MI 48109 USA

[3] Univ Michigan, Mol & Behav Neurosci Inst, Ann Arbor, MI 48109 USA

[4] Univ Michigan, Dept Radiol, Ann Arbor, MI 48109 USA

关键词: Depression;    Remitted MDD;    Reward processing;    Behavioral activation;    Behavioral inhibition;   

DOI  :  10.1016/j.psychres.2015.08.011

来源: Elsevier

【 摘 要 】

Anhedonia, the diminished anticipation and pursuit of reward, is a core symptom of major depressive disorder (MDD). Trait behavioral activation (BA), as a proxy for anhedonia, and behavioral inhibition (BI) may moderate the relationship between MDD and reward-seeking. The present studies probed for reward learning deficits, potentially due to aberrant BA and/or BI, in active or remitted MDD individuals compared to healthy controls (HC). Active MDD (Study 1) and remitted MDD (Study 2) participants completed the modified monetary incentive delay task (mMIDT), a behavioral reward-seeking task whose response window parameters were individually titrated to theoretically elicit equivalent accuracy between groups. Participants completed the BI Scale and BA Reward-Responsiveness and Drive Scales. Despite individual titration, active MDD participants won significantly less money than HCs. Higher Reward-Responsiveness scores predicted more won; Drive and BI were not predictive. Remitted MDD participants' performance did not differ from controls', and trait BA and BI measures did not predict r-MDD performance. These results suggest that diminished reward-responsiveness may contribute to decreased motivation and reward pursuit during active MDD, but that reward learning is intact in remission. Understanding individual reward processing deficits in MDD may inform personalized intervention addressing anhedonia and motivation deficits in select MDD patients. (C) 2015 Elsevier Ireland Ltd. All rights reserved.

【 授权许可】

Free