Investigating the Neural Mechanisms of Repetitive Brain Stimulation With Invasive and Noninvasive Electrophysiology in Humans

This study is investigating how the brain responds to repetitive magnetic brain stimulation (a non-invasive technique called rTMS) by recording electrical activity directly from the brain in people with epilepsy who already have brain monitoring electrodes placed as part of their standard care. **You may be eligible if...** - You are between 18 and 65 years old - You have medication-resistant epilepsy and are already undergoing invasive brain monitoring (phase II monitoring) as part of your epilepsy evaluation - You have the intellectual capacity to understand the study and provide informed consent - You do not have other major neurological conditions **You may NOT be eligible if...** - You have a metal implant that prevents an MRI - You have an unstable medical condition or uncontrolled neurological disease - You currently have an active substance use problem - You are pregnant or breastfeeding Talk to your doctor to see if this trial is right for you.