Investigators are conducting this study to test if temporarily and non-invasively stimulating the brain will affect the emotional response to stress in healthy participants. Participants will perform a series of tasks while completing an MRI scan. After this, participants will be randomized to undergo transcranial magnetic stimulation (TMS) at two visits, undergoing active stimulation at one visit and undergoing 'sham' stimulation at another visit. Immediately following both stimulation sessions, participants will repeat the tasks during MRI scanning.
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Dorsal anterior cingulate cortex activation to stress
Timeframe: 30-60 mins post-stimulation
Dorsal anterior cingulate cortex connectivity to stress
Timeframe: 30-60 mins post-stimulation
Change in arousal during stress
Timeframe: 30-60 mins post-stimulation
Change in valence during stress
Timeframe: 30-60 mins post-stimulation
Change in perceived control during stress
Timeframe: 30-60 mins post-stimulation
Systolic blood pressure response to stress
Timeframe: 30-60 mins post-stimulation
Heart rate response to stress
Timeframe: 30-60 mins post-stimulation