The process in which light signals are transformed by the PHOTORECEPTOR CELLS into
electrical signals which can then be transmitted to the brain
Note publique d''information :
The transducing of light energy to afferent nerve impulses in the retinal rods and
cones. After light photons are absorbed by the visual photopigments, the signal is
transmitted to the outer segment membrane by the cyclic GMP second messenger system,
where it closes the sodium channels. This channel gating ultimately generates an action
potential in the inner retina
Note générale sur le champ d'application :
differentiate from VISUAL PERCEPTION which takes place in the brain, vision takes
place in the eye; visual stimulation: probably PHOTIC STIMULATION but check text for
possible non-light (non-photic) stimulation