"Relational firing" model of shape processing in the primary visual cortex, which solves the binding problem for contours present in the visual image.

Neurobiological Basis of Circadian Rhythms: The mechanisms by which our central and peripheral clocks entrain to the outside world and generate the circadian rhythms telling us when to wake up or when to eat.

The influences on visual space perception and visually-guided sensorimotor behavior from the visual field as well as from other modalities.

Decision making under uncertainty, environmental decision making

Visual Perception, Human Psychophysics, and mathmatical models

Cellular and molecular basis of circadian rhythm generation, photic entrainment and the output controls