Document Detail

On derivation of spectral sensitivities of the human cones from trichromatic colour matching functions.
MedLine Citation:
PMID:  9893827     Owner:  NLM     Status:  MEDLINE    
Despite the recent advance made by using the direct methods of retinal densitometry, microspectrophotometry and suction electrophysiology, the psychophysical approach based on colour matching data still remains an important source of accurate information about the spectral sensitivity of the cone photoreceptors in the human visual system. However, the commonly used technique of estimating cone sensitivities, based on the assumption that dichromacy is caused by the lack of one of the three types of the cone photoreceptors, requires the colour matching functions not only from trichromatic observers but from dichromats as well. Here we evaluate an alternative approach, originally put forward by Bongard and Smimov, that derives cone spectral sensitivities from colour matching functions only; without resorting to colour deficiency or any other data. When applied to CIE standard colour matching functions, this method yields curves of spectral sensitivities that are close to the classical Smith-Pokorny fundamentals, though the long-wave cone is shifted towards the short-wave region of the spectrum by 5 nm, as compared with Smith and Pokorny's results.
A D Logvinenko
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Vision research     Volume:  38     ISSN:  0042-6989     ISO Abbreviation:  Vision Res.     Publication Date:  1998 Nov 
Date Detail:
Created Date:  1999-02-16     Completed Date:  1999-02-16     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  3207-11     Citation Subset:  IM    
School of Psychology, Queen's University Belfast, UK.
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MeSH Terms
Color Perception / physiology*
Color Perception Tests
Color Vision Defects / physiopathology
Models, Biological
Retinal Cone Photoreceptor Cells / physiology*

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