Document Detail

Form vision in the insect dorsal ocelli: an anatomical and optical analysis of the Locust Ocelli.
MedLine Citation:
PMID:  17349667     Owner:  NLM     Status:  MEDLINE    
The dorsal ocelli are commonly considered to be incapable of form vision, primarily due to underfocused dioptrics. We investigate the extent to which this is true of the ocelli of the locust Locusta migratoria. Locust ocelli contain thick lenses with a pronounced concavity on the inner surface, and a deep clear zone separating retina and lens. In agreement with previous research, locust ocellar lenses were found to be decidedly underfocused with respect to the retina. Nevertheless, the image formed at the level of the retina contains substantial information that may be extractable by individual photoreceptors. Contrary to the classical view it is concluded that some capacity for resolution is present in the locust ocelli.
Richard P Berry; Eric J Warrant; Gert Stange
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2007-03-08
Journal Detail:
Title:  Vision research     Volume:  47     ISSN:  0042-6989     ISO Abbreviation:  Vision Res.     Publication Date:  2007 May 
Date Detail:
Created Date:  2007-04-16     Completed Date:  2007-06-29     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  England    
Other Details:
Languages:  eng     Pagination:  1382-93     Citation Subset:  IM    
Centre for Visual Sciences, Research School of Biological Sciences, Australian National University, Canberra, Australia.
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MeSH Terms
Fixation, Ocular / physiology
Form Perception / physiology*
Lens, Crystalline / anatomy & histology,  physiology*
Locusta migratoria / anatomy & histology,  physiology*
Models, Biological
Photoreceptor Cells, Invertebrate / physiology
Retina / anatomy & histology,  physiology
Visual Acuity / physiology

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