Licht-im-Terrarium: Literaturdatenbank
Licht-im-Terrarium: Literaturdatenbank |
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Harkness, L. (1977). Chameleons use accommodation cues to judge distance. Nature, 267, 346–349. Added by: Sarina (2009-04-07 10:15:10) |
| Resource type: Journal Article DOI: 10.1038/267346a0 BibTeX citation key: Harkness1977 View all bibliographic details  |
Categories: Englisch = English Keywords: Akkommodation = Accommodation, Echsen = Lizards, Sehvermögen = Visual Perception Creators: Harkness Collection: Nature |
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| Abstract |
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Any animal that adjusts the focus of its eye lens has monocular distance information potentially available from its focusing mechanism. Such accommodation cues are independent of size and context, and thus could provide an objective measure of distance. Ingle has proposed that such information is used by monocular frogs1 and toads2, both of which he has shown to be capable of estimating distance with one eye3. There is no direct evidence, however, that any animal perceives distance as a function of the plane of focus of the image. The experiments described here demonstrate that chameleons do so in estimating the distance of their prey.
Added by: Sarina |