I study the human visual system using both psychophysical and physiological methods. In psychophysics, the performance of the human visual system is measured at the system level. In physiology, single cells' activities are recorded via in vivo preparation in the primate retina. With these two sources of information we are able to make progress towards linking the behavior of the system to cell biology, anatomical circuitry, and neuronal information processing.

Human psychophysics:

post-receptoral pathways for rod signals
rod-cone interaction in color perception
detection thresholds of the cone system
contribution of luminance and chromatic signals to vernier performance

Electrophysiology:

spatiotemporal information processing in post-receptoral pathways
light adaptation in ganglion cell
new method to measure cone inputs to visual neurons

Clinical research:

physiological mechanisms underlying the frequency-doubling perimetry
comparison of the conventional and CRT based perimetry tests

Computational modeling:

modeling of cone absolute detection threshold
modeling of ganglion cell's spike trains