Beta oscillations and reward processing: Coupling oscillatory activity and hemodynamic responses

Ernest Mas-Herrero, Pablo Ripollés, Azadeh HajiHosseini, Antoni Rodríguez-Fornells, Josep Marco-Pallarés

Research output: Contribution to journalArticlepeer-review

Abstract

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 mid-frontal 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.

Original languageEnglish (US)
Pages (from-to)13-19
Number of pages7
JournalNeuroImage
Volume119
DOIs
StatePublished - Oct 1 2015

Keywords

  • Beta oscillations
  • FMRI
  • JointICA
  • Reward
  • Time-frequency

ASJC Scopus subject areas

  • Neurology
  • Cognitive Neuroscience

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