In this project, we will examine effects of MA on reward function using electroencephalograms
(EEG), which will complement our ongoing study with MA and fMRI. We will determine how MA
alters reward-related neural activity and how this is related to its subjective rewarding
effects. The effects of MA on reward function will be examined using both reward-task-related
activation and resting state activity. We will examine the effects of MA on ratings of drug
liking and euphoria, as well as on EEG measures sensitivity to reward. Healthy young adults
will undergo three EEG sessions with placebo and MA (10 and 20 mg), while performing the
Monetary Incentive Delay task and the Stop Task, as a measure of inhibition. We will examine
correlations between the neural responses and subjective responses to MA.
Our central hypotheses are 1) that MA will increase feelings of alertness and well-being, and
2) that MA will increase neural responses to anticipation and receipt of reward, and 3) that
the effects of MA on mood will be correlated with its effects on neural responses to reward.