My interests within cognitive neuroscience, clinical neuropsychology, and neuroimaging focus on: (1) relationships between patterns of task performance and the activation of cortical circuits in the human brain with an emphasis on frontal lobe functions; (2) developmental aspects of normal and disordered relations among brain function, cognition, and behavior; and (3) the integration of structural and functional neuroimaging and neuropsychological findings in formulating diagnoses, outlining treatment, and prognosticating about outcome for a variety of clinical syndromes.

Currently, I'm working primarily on three projects: (1) a study of the effects of dextroamphetamine sulfate on cortical activity during face matching vs. location matching tasks (the ventral and dorsal visual processing streams); (2) a study of the effects of gonadal steroid hormones on brain activation in men and women; and (3) a study of functional connectivity between the frontal lobes and the cerebellum during working memory in healthy subjects.

Map of regional cerebral blood flow (rCBF) during the nBack working memory task
for a single subject using the oxygen-15 water intravenous bolus method.