Premium
An anatomical and electrophysiological study of the retina of the owl monkey, Aotes trivirgatus
Author(s) -
Hamasaki D. I.
Publication year - 1967
Publication title -
journal of comparative neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.855
H-Index - 209
eISSN - 1096-9861
pISSN - 0021-9967
DOI - 10.1002/cne.901300205
Subject(s) - scotopic vision , photopic vision , retina , biology , retinal , flicker fusion threshold , adaptation (eye) , anatomy , erg , rod , electrophysiology , flicker , neuroscience , pathology , medicine , biochemistry , alternative medicine , electrical engineering , engineering
Histological study of the retina of the owl monkey demonstrated two types of photoreceptors. The rods predominated and had characteristics of rods of other primates. The second type of receptor has been identified as a cone because (1) its inner segment was short and pyramidally shaped, (2) its outer segment was tapered and shorter than the rods, (3) it changed shape and size throughout the retina, and (4) it had different staining properties from the rods. Using the ERG as an index of retinal activity, the dark‐adaptation and flicker fusion frequency curves were shown to be made up of a photopic and scotopic segment. The photopic and scotopic b‐waves could be demonstrated during dark‐adaptation.