Human oscillatory activity associated to reward processing in a gambling task

被引：218

作者：

Marco-Pallares, Josep ^{[2
]}

Cucurell, David ^{[1
]}

Cunillera, Toni ^{[1
]}

Garcia, Rafael ^{[1
]}

Andres-Pueyo, Antonio ^{[3
]}

Muente, Thomas F. ^{[2
]}

Rodriguez-Fornells, Antoni ^{[1
,4
]}

机构：

[1] Univ Barcelona, Fac Psychol, Dept Basic Psychol, E-08007 Barcelona, Spain

[2] Otto Von Guericke Univ, Dept Neuropsychol, D-39112 Magdeburg, Germany

[3] Univ Barcelona, Fac Psychol, Dept Personal, E-08007 Barcelona, Spain

[4] ICREA, Barcelona, Spain

来源：

NEUROPSYCHOLOGIA | 2008年 / 46卷 / 01期

关键词：

feedback; gambling; medial frontal negativity; reward; wavelet analysis;

D O I：

10.1016/j.neuropsychologia.2007.07.016

中图分类号：

B84 [心理学]; C [社会科学总论]; Q98 [人类学];

学科分类号：

03 ; 0303 ; 030303 ; 04 ; 0402 ;

摘要：

Previous event-related brain potential (ERP) studies have identified a medial frontal negativity (MFN) in response to negative feedback or monetary losses. In contrast, no EEG correlates have been identified related to the processing of monetary gains orpositive feedback. This result is puzzling considering the large number of brain regions involved in the processing of rewards. In the present study we used a gambling task to investigate this issue with trial-by-trial wavelet-based time-frequency analysis of the electroencephalographic signal recorded non-invasively in healthy humans. Using this analysis a mediofrontal oscillatory component in the beta range was identified which was associated to monetary gains. In addition, standard time-domain ERP analysis showed an MFN for losses that was associated with an increase in theta power in the time-frequency analysis. We propose that the reward-related beta oscillatory activity signifies the functional coupling of distributed brain regions involved in reward processing. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：241 / 248

页数：8

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