Neuromodulation and Attention Deficits in MDD

This study is looking at how a type of brain stimulation called iTBS (intermittent theta burst stimulation, a form of repetitive magnetic brain stimulation) can help with attention problems in people with major depressive disorder (MDD). Researchers will also study healthy volunteers for comparison. **You may be eligible if...** - You are between 18 and 55 years old - You are right-handed - You have normal or corrected vision - For MDD participants: you meet clinical criteria for major depressive disorder, and your medication (if any) has been stable for at least one month - For healthy controls: you have no history of psychiatric or neurological disorders **You may NOT be eligible if...** - You have another severe mental health diagnosis (such as schizophrenia, bipolar disorder, or a neurodevelopmental disorder) - You are at high risk for suicide - You have received brain stimulation therapy or psychotherapy in the past 6 months - You have metal implants, claustrophobia, or other conditions that prevent MRI scanning (for the active stimulation group) Talk to your doctor to see if this trial is right for you.