Considerations on the use of video playbacks as visual stimuli: the Lisbon workshop consensus |
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| Authors: | R F Oliveira G G Rosenthal I Schlupp P K McGregor I C Cuthill J A Endler L J Fleishman J Zeil E Barata F Burford D Gonçalves M Haley S Jakobsson M D Jennions K E Körner L Lindström T Peake A Pilastro D S Pope S G B Roberts C Rowe J Smith J R Waas |
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| Institution: | Unidade de Investiga??o em Eco-Etologia, Instituto Superior de Psicologia Aplicada, Rua Jardim do Tabaco 34, 1149-041 Lisbon, Portugal, PT
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| Abstract: | This paper is the consensus of a workshop that critically evaluated the utility and problems of video playbacks as stimuli
in studies of visual behavior. We suggest that video playback is probably suitable for studying motion, shape, texture, size,
and brightness. Studying color is problematic because video systems are specifically designed for humans. Any difference in
color perception must lead to a different color sensation in most animals. Another potentially problematic limitation of video
images is that they lack depth cues derived from stereopsis, accommodation, and motion parallax. Nonetheless, when used appropriately,
video playback allows an unprecedented range of questions in visual communication to be addressed. It is important to note
that most of the potential limitations of video playback are not unique to this technique but are relevant to all studies
of visual signaling in animals.
Received: 20 October 1999 / Accepted: 5 November 1999 |
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| Keywords: | Visual communication Experimental design Vision Motion Color |
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