Does sound really disambiguate movement in the Sekuler effect?
Cottrell, D., and van der Zwan, R. (2008) Does sound really disambiguate movement in the Sekuler effect? Australian Journal of Psychology: combined abstracts of 2008 psychology conferences: the abstracts of the 35th Australasian experimental psychology conference. EPC08: 35th Australasian Experimental Psychology Conference , 28-30 March 2008, Fremantle, WA, Australia , p. 65.
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Sekuler et al in 1997 described an interesting multisensory effect in which a simple ambiguous visual stimulus was disambiguated by a sound. The ambiguous stimulus consisted of two white disks which appeared to move steadily toward each other, coincided, and then moved apart. This stimulus is ambiguous in that observers report the disks either collided and bouncing off each other or passed by each other on their original trajectory. However, if a brief sound is presented at the moment of coincidence, the perception is strongly biased towards the collision perception. Most interpretations of this observation emphasise the role of sound in disambiguating the visual stimulus. We will report 3 experiments which demonstrate that the effect occurs even when the stimuli are relatively unambiguous in their motion paths. The effect appears to be insensitive to the duration of the post coincidence stimulus but is sensitive to the contrast gradient at the edge of the moving stimuli, such that enhanced contrast tended to decrease the effect. Whether this is because the stimulus is 'less ambiguous' or other processes involved in movement detection is unclear at this stage.
|Item Type:||Conference Item (Poster)|
Cottrell, D., and van der Zwan, R. (2008) Does sound really disambiguate movement in the Sekuler effect? In: Australian Journal of Psychology, 60 (S1: Combined Abstracts of 2008 Psychology Conferences: the abstracts of the 35th Australasian experimental psychology conference): p. 65. doi: 10.1080/00049530802385541.
|FoR Codes:||17 PSYCHOLOGY AND COGNITIVE SCIENCES > 1701 Psychology > 170112 Sensory Processes, Perception and Performance @ 100%|
|SEO Codes:||97 EXPANDING KNOWLEDGE > 970117 Expanding Knowledge in Psychology and Cognitive Sciences @ 100%|
|Deposited On:||23 Nov 2011 16:13|
|Last Modified:||23 Nov 2011 16:13|
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