Intracranial Neurophysiological Signatures of Fear and Anxiety in Humans

This research study is measuring electrical brain activity related to fear and anxiety in people who already have brain electrodes implanted for epilepsy treatment. Researchers are using those existing electrodes to record brain signals during fear-related tasks to better understand the brain regions involved in anxiety. This knowledge could help develop better treatments for anxiety disorders. **You may be eligible if...** - You are 18 or older - You have already had depth electrodes or a responsive neurostimulation (RNS) device placed in your brain for epilepsy - You are willing and able to participate and give informed consent - You are able to read and write English fluently **You may NOT be eligible if...** - You have not had brain electrodes implanted - You are pregnant - You have active psychosis - You have current suicidal thoughts - You have an active substance abuse problem Talk to your doctor to see if this trial is right for you.