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SUMMARY:“Why are rods more sensitive than cones?”  - Professor Gordon 
 Fain (UCLA and PDN)
DTSTART:20160518T120000Z
DTEND:20160518T130000Z
UID:TALK66022@talks.cam.ac.uk
CONTACT:John Mollon
DESCRIPTION:This year we celebrate the 150th anniversary of the paper of M
 ax Schultze\, who examined the retinas of a large number of vertebrate spe
 cies and first proposed the duplex theory of vision\, that vertebrate eyes
  have rods for dim light and cones for bright light and color detection. W
 e now know that this division is fundamental not only to the photoreceptor
 s but to the whole of retinal and visual processing. But why are rods more
  sensitive\, and how did the duplex retina first evolve? Recent research p
 articularly expressing cone proteins in rods or changing the level of prot
 ein expression provide a new understanding of the two kinds of photorecept
 ors and help to explain how gene duplication and the formation of rod-spec
 ific proteins produced the duplex retina\, which has remained remarkably u
 nchanged in physiology from amphibians to man.
LOCATION:Kenneth Craik Room\, Craik-Marshall Building\, Downing Site
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