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Form vision in the insect dorsal ocelli: An anatomical and optical analysis of the Locust Ocelli

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Author

Summary, in English

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.

Department/s

Publishing year

2007

Language

English

Pages

1382-1393

Publication/Series

Vision Research

Volume

47

Issue

10

Document type

Journal article

Publisher

Elsevier

Topic

  • Zoology

Keywords

  • optics
  • insect
  • three-dimensional
  • ocelli
  • acuity

Status

Published

Research group

  • Lund Vision Group

ISBN/ISSN/Other

  • ISSN: 1878-5646