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Motion sensitivity of the Jacky dragon, Amphibolurus muricatus : random-dot kinematograms reveal the importance of motion noise for signal detection

Woo, Kevin L; Burke, Darren; Peters, Richard


The evolution of movement-based signals is constrained by the successful segmentation of relevant movements from motion noise by the visual system of receivers. We tested five Jacky dragons, Amphibolurus muricatus, a species characterized by stereotyped movement-based social signals, for their ability to discriminate the direction of drifting dots against simulated background motion noise of varying angular speeds. Results from trials with artificial (dot) backgrounds suggested that Jacky...[Show more]

CollectionsANU Research Publications
Date published: 2009
Type: Journal article
Source: Animal Behaviour
DOI: 10.1016/j.anbehav.2008.10.011


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