PMID: 3750860Jan 1, 1986Paper

Spatial resolution of the Galago

Vision Research
A LangstonR Fox

Abstract

The spatial vision of two adult galagos (Galago crassicaudatus) was assessed using a two choice discrimination task to determine their contrast sensitivity. Both contrast sensitivity functions exhibited low and high spatial frequency attenuation with the peak sensitivity at 1%. For one animal, the peak occurred at 0.5 c/deg and the extrapolated cutoff frequency was 2.6 c/deg; for the other, the peak was 1 c/deg and the cutoff was 4.3 c/deg. For this animal, grating acuity was also tested and, depending upon definition of threshold, yielded threshold estimates from 4.8 to 6.0 c/deg. The data supports the conclusion that the spatial vision of the galago and the cat is quite similar, a congruence that presumably reflects their adaptation to a nocturnal niche, rather than their divergent phylogenetic origins.

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Citations

Sep 26, 2000·American Journal of Physical Anthropology·R F Kay, E C Kirk
Jan 13, 2006·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Mimi M Ghim, William Hodos
Oct 18, 2011·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Olle LindAlmut Kelber
Oct 13, 2000·Progress in Retinal and Eye Research·P K Ahnelt, H Kolb
Jan 31, 2009·American Journal of Primatology·Carrie C Veilleux, E Christopher Kirk
Mar 5, 2014·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Addison D Kemp, E Christopher Kirk
Feb 17, 2015·Neuroscience Research·Jude F Mitchell, David A Leopold
Sep 1, 2017·Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft·W M Harmening
Sep 18, 2001·The Journal of Comparative Neurology·O Dkhissi-BenyahyaH M Cooper
Feb 2, 2019·Journal of Vision·Matteo SantonNico K Michiels

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