An illusion of coherent global motion arising from single brief presentations of a stationary stimulus
Brooks, A, van der Zwan, R & Holden, J, 'An illusion of coherent global motion arising from single brief presentations of a stationary stimulus', Vision Research, vol. 43, no. 23, pp. 2387-2392.
Vision Research home page available at http://www.elsevier.com/locate/visres
Publisher version of article available: http://dx.doi.org/10.1016/S0042-6989(03)00467-X
We describe a new illusion in which a single stationary stimulus appears to undergo coherent global motion. Contrast relationships between the stimulus elements suggest the illusion arises via processing of Off- and On-channel signals that remain independent until after passing through low-level motion detectors. We propose that patterns of activation resulting from biphasic temporal impulse response functions in the magnocellular pathway are the basis of the illusion, and describe a model to account for the illusory motion percept.