Document Detail

Color vision and Frithiof Holmgren's discordant retinal microstimulation findings.
MedLine Citation:
PMID:  20628952     Owner:  NLM     Status:  In-Process    
Frithiof Holmgren was a nineteenth-century Swedish professor of physiology who, after a sabbatical year at Helmholtz's laboratory in Heidelberg, devoted himself to studies of color vision and color blindness. Following Blix's successful demonstration of cutaneous receptor specificity by means of point stimulation, he decided to apply an analogous technique for psychophysical examination of the human retina. His findings appeared to support the Young-Helmholtz hypothesis of three primary colors and invalidated Hering's alternative four color opponent hypothesis. However, contemporaries (Hering, Isaachsen) could not reproduce Holmgren's results, and his findings fell into disrepute. They have now been confirmed, but their previous theoretical significance was not supported.
Ulf Norrsell
Publication Detail:
Type:  Biography; Journal Article; Portraits; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of the history of the neurosciences     Volume:  19     ISSN:  1744-5213     ISO Abbreviation:  J Hist Neurosci     Publication Date:  2010 Jul 
Date Detail:
Created Date:  2010-07-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9441330     Medline TA:  J Hist Neurosci     Country:  England    
Other Details:
Languages:  eng     Pagination:  228-38     Citation Subset:  IM; Q    
Physiology Section, Department of Neuroscience and Physiology, University of Gothenburg, SE 405 30, Sweden.
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Personal Name Subject
Personal Name Subject:
Frithiof Holmgren

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