[Peculiarities of transmission of the receptor signal in photoreceptors].
These ability of photoreceptors to respond to single photons by single electrical events was shown to underlie an astonishing combination of electrotonic transmission of the receptor signal with the impulse principle of its coding. During functional evolution of photoreceptors, the discrete nature of the light itself made it unnecessary for photoreceptors to evolve the spike generating mechanism inherent in other primary sensitive receptors.
D000818:Animals; D005075:Biological Evolution; D004553:Electric Conductivity; D010786:Photoreceptor Cells / Q000502:physiology*
Osobennosti peredachi retseptornogo signala v fotaretseptorakh.