期刊
NEUROIMAGE
卷 119, 期 -, 页码 13-19出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.neuroimage.2015.05.095
关键词
Reward; Beta oscillations; fMRI; Time-frequency; JointICA
资金
- Spanish Government (MINECO) [PSI2012-37472, PSI2011-29219]
- Spanish Government (FPI program) [BES-2010-032702]
- Spanish Government (FPU program) [AP2010-4179]
- ICREA Funding Source: Custom
Diverse cortical and subcortical regions are synergically engaged during reward processing. Previous studies using time-frequency decomposition of Electroencephalography (EEG) data have revealed an increase of midfrontal beta oscillatory activity (BOA) after reward delivery, which could be a potential mechanism in the coordination of the different areas engaged during reward processing. In order to evaluate this hypothesis, twenty subjects performed a monetary gambling paradigm in two separate sessions (EEG and fMRI). Time-frequency oscillatory EEG data and fMRI activity were fused using Joint Independent Component Analysis (ICA). The present results showed that mid-frontal BOA elicited by monetary gains is associated with the engagement of a fronto-striatal-hippocampal network previously involved in reward-related memory enhancement, supporting the role of this activity during reward processing. (C) 2015 Elsevier Inc. All rights reserved.
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