Positron emission tomography
George's main research interests include major depression, bipolar disorder, anxiety disorders (particularly obsessive-compulsive disorder), Tourette syndrome, and chronic pain. His principal techniques include neuroimaging (functional magnetic resonance imaging and Positron emission tomography), brain stimulation, vagus nerve stimulation (VNS), transcranial magnetic stimulation (TMS), deep brain stimulation (DBS), and electroconvulsive therapy (ECT).