Document Detail


Bipolar cell pathways for color vision in non-primate dichromats.
MedLine Citation:
PMID:  21070688     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Color vision in mammals is based on the expression of at least two cone opsins that are sensitive to different wavelengths of light. Furthermore, retinal pathways conveying color-opponent signals are required for color discrimination. Most of the primates are trichromats, and "color-coded channels" of their retinas are unveiled to a large extent. In contrast, knowledge of cone-selective pathways in nonprimate dichromats is only slowly emerging, although retinas of dichromats like mice or rats are extensively studied as model systems for retinal information processing. Here, we review recent progress of research on color-coded pathways in nonprimate dichromats to identify differences or similarities between di- and trichromatic mammals. In addition, we applied immunohistochemical methods and confocal microscopy to retinas of different species and present data on their neuronal properties, which are expected to contribute to color vision. Basic neuronal features such as the "blue cone bipolar cell" exist in every species investigated so far. Moreover, there is increasing evidence for chromatic OFF channels in dichromats and retinal ganglion cells that relay color-opponent signals to the brain. In conclusion, di- and trichromats share similar retinal pathways for color transmission and processing.
Authors:
Christian Puller; Silke Haverkamp
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Publication Detail:
Type:  Journal Article     Date:  2010-11-12
Journal Detail:
Title:  Visual neuroscience     Volume:  28     ISSN:  1469-8714     ISO Abbreviation:  Vis. Neurosci.     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2011-01-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8809466     Medline TA:  Vis Neurosci     Country:  England    
Other Details:
Languages:  eng     Pagination:  51-60     Citation Subset:  IM    
Affiliation:
Department of Neuroanatomy, Max Planck Institute for Brain Research, Frankfurt a.M., Germany.
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