Document Detail

Critical flicker frequency and the Pulfrich phenomenon.
MedLine Citation:
PMID:  1200115     Owner:  NLM     Status:  MEDLINE    
The critical flicker frequency and the Pulfrich stereophenomenon were both used to investigate the long term effects on temporal resolution and visual latency of wearing a tinted lens in front of one eye for a period of five days. The results obtained from three subjects showed that in every case the critical flicker frequency was depressed by the tinted lens and displayed no adaptive recovery, but the Pulfrich effect displayed a reduction of apparent depth in the median plane indicating the presence of an adaptive recovery. It is postulated that the CFF indicates that the physiological transmission of the visual signal is unaltered over the the five days and the Pulfrich adaptation occurs due to an alteration of the interpretation of the unchanged visual response. That is, the adaptation is a perceptual rather than a physiological one.
W A Douthwaite; L C Morrison
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  American journal of optometry and physiological optics     Volume:  52     ISSN:  0093-7002     ISO Abbreviation:  Am J Optom Physiol Opt     Publication Date:  1975 Nov 
Date Detail:
Created Date:  1976-02-13     Completed Date:  1976-02-13     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0417614     Medline TA:  Am J Optom Physiol Opt     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  745-9     Citation Subset:  IM    
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MeSH Terms
Adaptation, Ocular
Dark Adaptation
Depth Perception* / physiology
Flicker Fusion* / physiology
Fovea Centralis / physiology
Reaction Time

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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