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2008

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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/69545

Human oscillatory activity associated to reward processing in a gambling task

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Recurs relacionat

http://dx.doi.org/10.1016/j.neuropsychologia.2007.07.016

Resum

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 or positive 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.

Matèries

Jocs d'atzar, Potencials evocats (Electrofisiologia), Mapatge del cervell

Matèries (anglès)

Gambling, Evoked potentials (Electrophysiology), Brain mapping

Citació

Col·leccions

Articles publicats en revistes (Cognició, Desenvolupament i Psicologia de l'Educació)
Articles publicats en revistes (Psicologia Clínica i Psicobiologia)

Citació

MARCO PALLARÉS, Josep, et al. Human oscillatory activity associated to reward processing in a gambling task. Neuropsychologia. 2008. Vol. 46, num. 1, pags. 241-248. ISSN 0028-3932. [consulted: 2 of August of 2026]. Available at: https://hdl.handle.net/2445/69545

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