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Visual pigments of rods and cones in a human retina.
If assumptions are made about the length of cones and about pre‐receptoral absorption, it is possible to derive psychophysical sensitivities for the cones that closely resemble the appropriate pi mechanisms of W. S. Stiles, however, the psychophysical sensitivity derived for the rods is considerably broader than the C.I.E. scotopic sensitivity function.
Human visual pigments: microspectrophotometric results from the eyes of seven persons
Both patients were classified as normal trichromats by all clinical tests of colour vision but there was a clear difference in their relative sensitivities to long-wave fields, which proved to be that required by the microspectrophotometric results.
The non-marine Crustacea of Antarctica and the Islands of the Southern Ocean: biodiversity and biogeography
All 40 Continental and Maritime Antarctic freshwater records can be ascribed to the historic introduction of anthropogenic aliens, Holocene immigration of colonists, returning re-colonists and marine species 'marooned' in epishelf and other coastal lakes.
The spectral clustering of visual pigments.
Microspectrophotometric demonstration of four classes of photoreceptor in an old world primate, Macaca fascicularis.
1. Microspectrophotometric measurements reveal four classes of photoreceptor in the retina of the cynomolgus monkey, Macaca fascicularis, which is known to possess colour vision similar to that of a
The visual pigments of rods and cones in the rhesus monkey, Macaca mulatta.
If the long wave‐length and middle wave-length cone pigments of the rhesus monkey are assumed to be identical to those of man and if additional assumptions are made about the lengths of human outer segments and about prereceptoral absorption, it is possible to derive psychophysical sensitivities that closely resemble the pi5 and pi4 mechanisms of W. S. Stiles.
Assessing the Fitness of Visual Pigments for their Photic Environments
In the dictionary sense a pigment is a substance that is coloured to the human eye. Colour is so striking a sensation that it was once thought to be an attribute of the “coloured” substance itself.
Freshwater invertebrates of subantarctic South Georgia
  • H. Dartnall
  • Environmental Science, Biology
  • 25 November 2005
The fauna of South Georgia, although similar to that of the other Scotia Arc Islands, particularly Signy Island, is much richer by virtue of its lower latitude and milder climate.