Universität zu Köln

Schueller, Canan Beate, Kuhn, Jens, Jessen, Frank and Hu, Xiaochen (2019). Neuronal correlates of delay discounting in healthy subjects and its implication for addiction: an ALE meta-analysis study. Am. J. Drug Alcohol Abuse, 45 (1). S. 51 - 67. PHILADELPHIA: TAYLOR & FRANCIS INC. ISSN 1097-9891

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Abstract

Background: Delay discounting (DD) describes the phenomenon of devaluing future rewards in favor of immediate rewards. Increased DD is a key behavioral marker of addiction, and has been suggested as a target for interventions to alleviate addiction symptoms (e.g., preference for immediate drug use over larger-and-later rewards, and relapses) in patients with substance use disorders (SUD). Objectives: Performed a meta-analysis on neuroimaging results of DD regarding specific contrasts in healthy participants. Reviewed the results of existing patient studies in light of the meta-analyses results. Methods: We conducted activation likelihood estimation meta-analyses on DD neuroimaging studies (25 studies, n = 583; 354 males and 229 females) regarding six analytic strategies. Results: The meta-analyses revealed various subdivisions of the cortical-basal ganglia circuits that are associated with different aspects of DD in healthy subjects. By comparing the meta-analyses results and patients' studies regarding each contrast, we highlighted three brain regions that may underlie excessive DD in patients. Decreased left inferior frontal gyrus (IFG) activity was related to less preference for delayed choices; reduced ventral striatum (VS) activity was associated with impaired valuation processes; and declined anterior cingulate cortex (ACC)/medial prefrontal cortex (mPFC) activity was associated with alterations in processing difficult choices. Conclusions: We propose that neuromodulation (e.g. deep brain simulation) or behavioral interventions (e.g. episodic future imagination) targeting these key brain regions (IFG, VS, ACC/mPFC) may be effective for improving DD function in patients with SUD, enhancing valuations of future rewards and helping to resist the temptation of immediate drug use.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Schueller, Canan Beate UNSPECIFIED UNSPECIFIED UNSPECIFIED Kuhn, Jens UNSPECIFIED UNSPECIFIED UNSPECIFIED Jessen, Frank UNSPECIFIED UNSPECIFIED UNSPECIFIED Hu, Xiaochen UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-159604
DOI:	10.1080/00952990.2018.1557675
Journal or Publication Title:	Am. J. Drug Alcohol Abuse
Volume:	45
Number:	1
Page Range:	S. 51 - 67
Date:	2019
Publisher:	TAYLOR & FRANCIS INC
Place of Publication:	PHILADELPHIA
ISSN:	1097-9891
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language NUCLEUS-ACCUMBENS CORE; MEDIAL PREFRONTAL CORTEX; THETA BURST STIMULATION; DECISION-MAKING; ORBITOFRONTAL CORTEX; INTERTEMPORAL CHOICE; IMPULSIVE-CHOICE; CIGARETTE-SMOKING; BRAIN ACTIVATION; SELF-CONTROL Multiple languages Psychology, Clinical; Substance Abuse Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/15960