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  Visually Elicited Escape in Crabs

Nalbach, H.-O. (1990). Visually Elicited Escape in Crabs. In K. Wiese, W.-D. Krenz, J. Tautz, H. Reichert, & B. Mulloney (Eds.), Frontiers in Crustacean Neurobiology (pp. 165-172). Basel, Switzerland: Birkhäuser.

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 Creators:
Nalbach, H-O1, 2, Author           
Affiliations:
1Former Department Neurophysiology of Insect Behavior, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497802              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Abstract: A review is given on field and laboratory studies, including intracellular recordings from the optic lobes, on the visually elicited escape response of a mangrove and a rocky shore crab. The crabs flee when the angular size of an approaching object has expanded by a critical value. Neurons which respond specifically to this stimulus were encountered in the lobula (internal medulla). Illusiory expansion produced by rotating spirals evokes no reaction. The results suggest a hypothesis on the underlying mechanism for looming detection. The direction of the crab’s escape can be understood as a compromise between a tendency away from the approaching object and towards a probable shelter since it can be described by a weighted vectorial summation of both components.

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 Dates: 1990
 Publication Status: Published in print
 Pages: -
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 Rev. Type: -
 Identifiers: DOI: 10.1007/978-3-0348-5689-8_18
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Title: Frontiers in Crustacean Neurobiology
Source Genre: Book
 Creator(s):
Wiese, K, Editor
Krenz, W-D, Editor
Tautz, J, Editor
Reichert, H, Editor
Mulloney, B, Editor
Affiliations:
-
Publ. Info: Basel, Switzerland : Birkhäuser
Pages: 561 Volume / Issue: - Sequence Number: - Start / End Page: 165 - 172 Identifier: ISBN: 3-7643-2355-8