The mechanism of photon-like dark noise in rod photoreceptors
نویسندگان
چکیده
منابع مشابه
The molecular mechanism of thermal noise in rod photoreceptors.
Spontaneous electrical signals in the retina's photoreceptors impose a limit on visual sensitivity. Their origin is attributed to a thermal, rather than photochemical, activation of the transduction cascade. Although the mechanism of such a process is under debate, the observation of a relationship between the maximum absorption wavelength (λ(max)) and the thermal activation kinetic constant (k...
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Photoreceptors in animals are generally of two kinds: the ciliary or c-type and the rhabdomeric or r-type. Although ciliary photoreceptors are found in many phyla, vertebrates seem to be unique in having two distinct kinds which together span the entire range of vision, from single photons to bright light. We ask why the principal photoreceptors of vertebrates are ciliary and not rhabdomeric, a...
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ژورنال
عنوان ژورنال: Journal of General Physiology
سال: 2019
ISSN: 0022-1295,1540-7748
DOI: 10.1085/jgp.201912376