In this experiments we have found a particular case of perceptual causality in Glare effect animated (Zavagno & Bressanelli, 2006). In animated Glare effect a white centre T (which luminance was kept constant) of a black cross F, was seen to increase its luminosity in time and to cause the physical changes in F, i.e. the modification of ramp of luminance gradients from black-black to black-white. The present study is a contribution to enlarge the catalog of perceptual causality to qualitative changes. In previous experiment we accelerated end decelerated the animation found an effect of time on the perception of causality. For longer animation (5fr/sec) participants’ descriptions seemed to be consistent to the presence of a luminosity threshold, which was found in static Glare effect (Zavagno e Caputo, 2001,2005). Moreover, it seemed that this threshold would have a role on perception of causality.
Glare effect animation: a peculiar case of causality
BRESSANELLI, Daniela
2006-01-01
Abstract
In this experiments we have found a particular case of perceptual causality in Glare effect animated (Zavagno & Bressanelli, 2006). In animated Glare effect a white centre T (which luminance was kept constant) of a black cross F, was seen to increase its luminosity in time and to cause the physical changes in F, i.e. the modification of ramp of luminance gradients from black-black to black-white. The present study is a contribution to enlarge the catalog of perceptual causality to qualitative changes. In previous experiment we accelerated end decelerated the animation found an effect of time on the perception of causality. For longer animation (5fr/sec) participants’ descriptions seemed to be consistent to the presence of a luminosity threshold, which was found in static Glare effect (Zavagno e Caputo, 2001,2005). Moreover, it seemed that this threshold would have a role on perception of causality.
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