Primary laboratory and clinical research interest: image guidance to introduce therapeutic viruses, drugs, radiation, and devices into the human brain for treatment and study of brain and pituitary tumors, of movement disorders, trigeminal neuralgia, and of normal brain function related to reward-based learning, decision making, and attentional selection. Clinically busy neurosurgeon at the Wake Forest Baptist Medical Center in Winston-Salem, NC and Gamma Knife Co-director.