The neural basis of impulsive discounting in pathological gamblers

doi:10.1007/s11682-015-9352-1

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	The neural basis of impulsive discounting in pathological gamblers
	Miedl, Stephan F.1; Wiswede, Daniel 2; Marco-Pallares, Josep 3,4; Ye, Zheng5 ; Fehr, Thorsten 6; Herrmann, Manfred 6; Muente, Thomas F.2,7
摘要	Pathological gambling is thought to result from a shift of balance between two competing neurobiological mechanisms: on the one hand the reward system involved in the regulation of the urge to get rewards and on the other hand the top-down control system. Fifteen pathological gamblers (PG) and fifteen healthy controls (HC) were studied in an event-related functional magnetic resonance imaging experiment where participants had to choose either a smaller, but immediately available monetary reward (SIR) or a larger delayed reward (LDR). We examined contrasts between LDR and SIR decisions. Additionally, we contrasted choices near the individual indifference point (indifferent decisions) and clear SIR or LDR choices (sure decisions). Behavioral data confirmed former results of steeper discount rates in PG. Contrasting choices of LDR vs. SIR showed widespread bilateral activations in PG, including postcentral gyrus, thalamus, superior/medial frontal gyrus and cingulate gyrus, whereas HC demonstrated only focal left-sided pre/postcentral activity. Forgoing an immediate reward thus recruits a widespread brain network including typical control areas. Indifferent vs. sure decisions were associated with widespread activation in PG, including the bilateral fronto-parietal cortex, insula, anterior cingulate gyrus, and striatum, whereas in HC, only bilateral frontal cortex and insula were activated. The reverse contrast demonstrated more activity for sure decisions in the cingulate gyrus, insula, and medial frontal gyrus in HC, whereas PG showed inferior parietal and superior temporal activity. The present study demonstrates that pathological gambling is associated with a shift in the interplay between a prefrontal-parietal control network and a brain network involved in immediate reward consumption.
关键词	Delay discounting Intertemporal choice Pathological gambling fMRI Reward
	2015-12-01
语种	英语
DOI	10.1007/s11682-015-9352-1
发表期刊	BRAIN IMAGING AND BEHAVIOR
ISSN	1931-7557
卷号	9 期号:4 页码:887-898
期刊论文类型	Article
收录类别	SCI ; SSCI
WOS关键词	CATECHOL-O-METHYLTRANSFERASE ; INTERTEMPORAL CHOICE ; DELAYED REWARDS ; DECISION-MAKING ; GAMBLING SEVERITY ; SUBJECTIVE VALUE ; BRAIN ACTIVITY ; HIGH-RATES ; PROBABILITY ; ALCOHOL
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
WOS研究方向	Neurosciences & Neurology
WOS类目	Neuroimaging
WOS记录号	WOS:000365755500022
引用统计	被引频次：33[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.psych.ac.cn/handle/311026/15368
专题	健康与遗传心理学研究室
作者单位	1.Salzburg Univ, Dept Psychol, A-5020 Salzburg, Austria 2.Univ Lubeck, Dept Neurol, D-23538 Lubeck, Germany 3.Inst Invest Biomed Bellvitge IDIBELL, Barcelona, Spain 4.Univ Barcelona, Dept Basic Psychol, Barcelona, Germany 5.Chinese Acad Sci, Inst Psychol, Beijing 100101, Peoples R China 6.Univ Bremen, Dept Neuropsychol, D-28359 Bremen, Germany 7.Univ Lubeck, Inst Psychol 2, Lubeck, Germany
推荐引用方式 GB/T 7714	Miedl, Stephan F.,Wiswede, Daniel,Marco-Pallares, Josep,et al. The neural basis of impulsive discounting in pathological gamblers[J]. BRAIN IMAGING AND BEHAVIOR,2015,9(4):887-898.
APA	Miedl, Stephan F..,Wiswede, Daniel.,Marco-Pallares, Josep.,Ye, Zheng.,Fehr, Thorsten.,...&Muente, Thomas F..(2015).The neural basis of impulsive discounting in pathological gamblers.BRAIN IMAGING AND BEHAVIOR,9(4),887-898.
MLA	Miedl, Stephan F.,et al."The neural basis of impulsive discounting in pathological gamblers".BRAIN IMAGING AND BEHAVIOR 9.4(2015):887-898.

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