Electrophysiological correlates of mood and reward dynamics in human adolescents

Abstract

Self-reported mood changes during a gambling task can be related to measured fluctuations in brain activity. Previous fMRI work by Keren et al. showed that the reward expectation component from the long term average (LTA) mood model, explained variations in the BOLD signal from the anterior cingulate cortex (ACC). Based on high temporal resolution Magnetoencephalography (MEG) data, here we explore whether the trial level variability of evoked potentials and brain oscillations during the same gambling task could be partly explained by changes in self-reported mood, expectation and reward prediction error (RPE)