Provided herein are, inter alia, methods for detecting the anatomic structure of a nucleus accumbens in the brain of a subject. The method includes inserting an electrode into the ventral striatum of a subject; and detecting an oscillatory frequency of 30-40 Hz, thereby identifying the anatomic structure of a nucleus accumbens in the subject. The methods provided herein may include a step of delivering an electrical stimulation to ameliorate or prevent an OCD symptom from occurring.
ELECTROGRAPHIC OBSESSION IN HUMAN NUCLEUS ACCUMBENS