Expertise:
I employ psychophysical methods to infer the early events
in the retina that mediate color vision, twilight vision,
the ability to resolve temporally modulated lights and changes
in spatial contrast. In my laboratory, visual function is
measured for observers with normal vision, and with vision
altered by disease or age. The tests take may the form of
asking the observer whether a briefly presented light is
seen, or how the appearances of two lights differ. I have
active research collaborations with physiologists and anatomists
that allow evaluation of the plausibility of models generated
from the psychophysical investigations of visual function.
Here, data are in the form of recordings of the activity
of single retinal neurons. The stimulus situations are designed
so that direct comparisons can be made between visual function
measured psychophysically, and the behavior of single neurons.
Often, the physiological investigations suggest novel behavioral
ways of investigating function
Specific research projects:
-- Sensitivity regulation in the visual system
-- Psychophysical measurement of magnocellular and parvocellular
function in normal observers and patients with ophthalmic
disease
-- Psychophysical measurement of rod function and rod-cone
interactions
-- Functional imaging of the human retina
-- Retinal inputs to the pupillary system
Laboratory personnel:
Andrew Zele, Postdoctoral Fellow, Ophthalmology and Visual
Science
zele@uchicago.edu
Dingcai Cao, Senior Biostatistician, Biostatistical Consulting
Laboratory
Department of Health Studies
d-cao@uchicago.edu
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