Vol. 26 (5) 2005 Neuro endocrinology letters

Demonstration of additivity failure in human circadian phototransduction.

OBJECTIVES: Published data, both on nocturnal melatonin suppression in humans and on widely accepted retinal structure and function, suggest that spectral opponency plays a role in human circadian phototransduction. We directly test subadditivity, implied by spectral opponency, in human circadian phototransduction in response to nearly .....