Document Detail

Spectral sensitivity differences between rhesus monkeys and humans: Implications for neurophysiology.
MedLine Citation:
PMID:  25253473     Owner:  NLM     Status:  Publisher    
Spectral sensitivity of humans and rhesus monkeys was compared using identical displays and similar procedures. Detection thresholds were measured for: (1) 15 Hz modulation of a blue and a green CRT phosphor, (2) 15 Hz modulation of all three phosphors together, and (3) slow (< 1 Hz) modulations of a blue and a green phosphor under scotopic conditions. Monkeys had lower blue-to-green threshold ratios than humans at all eccentricities tested (0.5 to 7°), consistent with a lower lens optical density in monkeys. Adjusting a standard set of human-based cone fundamentals to a lower lens optical density eliminated the putative S-cone signals from a population of V1 neurons that appeared to sum signals from all three cone types. In addition to apparently having a lower lens density than humans, monkeys were more sensitive to 15 Hz red-green isoluminant modulations than humans - an effect that cannot be explained by optical factors.
Zachary Lindbloom-Brown; Leah J Tait; Gregory D Horwitz
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-9-24
Journal Detail:
Title:  Journal of neurophysiology     Volume:  -     ISSN:  1522-1598     ISO Abbreviation:  J. Neurophysiol.     Publication Date:  2014 Sep 
Date Detail:
Created Date:  2014-9-25     Completed Date:  -     Revised Date:  2014-9-26    
Medline Journal Info:
Nlm Unique ID:  0375404     Medline TA:  J Neurophysiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2014, Journal of Neurophysiology.
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