Prediction of maximum allowable retinal slip speed in the fiddler crab, Uca pugilator. From: The Biological Bulletin | Date: October 1, 1997| Author: Layne, John E.; Wicklein, Martina; Dodge, Frederick A.; Barlow, Robert B. | COPYRIGHT 1997 Marine Biological Laboratory. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group.Copyright information

The retinal slip speed tolerated by the fiddler crab was predicted using electroretinograms and measurement of the photoreceptor acceptance angle. Observations on saccadic eye movements revealed that the allowable retinal slip for crabs rarely exceeds three degrees per second even during fast movements. This result led to speculations on the stability of the crabs' retinal image for successful motion vision and on the possibility that image slip may pollute optic flow pattern.

Stabili...

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