Visual Functions Associated with Rhesus Visual Pursuit Tracking

摘要

Although visual function and visual performance have both been investigated, therelationship between these measures is largely unexplored. In this study, we have evaluated the receptor input for visual pursuit motor tracking performance using the rhesus monkey as an animal model for the human visual system. Spectral sensitivity functions derived from rhesus spectral intensity tracking performance functions emphasize the role of photopic retinal mechanisms for high fidelity tracking performance criteria. Spectral sensitivity functions under these conditions appear photopic in shape and reflect central retinal long and intermediate cone systems. Scotopic intrusion may occur as performance decreases with lower fidelity performance criteria. Species differences previously reported between rhesus and human long wavelength foveal retinal mechanisms may be reflected in visual performance criteria as well.