This study is exploring how brain regions affect decision-making, especially in people with depression. They aim to understand how the brain's cingulate cortex—a part involved in emotion and decision-making—works during tough choices. Transcranial Magnetic Stimulation (TMS) and Temporal Interference (TI) are used. These methods use magnets or electrical pulses to stimulate parts of the brain. Participants will play game-like tasks while undergoing TMS or TI to see how the stimulation affects their choices. This study involves both adults with depression and healthy participants.

• Study involves several lab visits using TMS or TI.
• Participants will receive compensation for their time.
• There are risks like not being eligible if you're pregnant or have certain medical conditions.

Participants must speak English, not use drugs, and fit in an MRI scanner. You cannot join if you have medical implants, a history of seizures, or use certain medications. The study excludes pregnant women and those with severe psychiatric conditions. This study provides insight into how decision-making is affected by depression and could guide future treatments.