Sensory Systems | Cognitive Neuroscience
The recovery of shape from 3rd-order counterchange-specified motion vs. 1st-order motion energy
Joseph Norman*, Howard S Hock
*Corresponding author: Joseph Norman
Center for Complex Systems and Brain Sciences, Florida Atlantic University, Boca Raton, FL, USA
F1000Posters 2012, 3: 801 (poster) [English]
Poster [667.31 KB]
Presented at
Vision Sciences Society Annual Meeting 2012,
11 - 16 May 2012, 56.527
Coherent motion can provide information for segregating a figure from its background in the absence of static (e.g. textural) cues. Here a series of experiments and simulations are conducted in order to identify the visual information that supports this ability.
First-order motion energy was found insufficient in both the experiments and the simulations for extracting the shape of a moving figure on a background of dynamic noise. In contrast 3rd-order counterchange was found to be a sufficient source of information for figural segregation.
Additional modeling will include system dynamics and address neural population effects (i.e. cooperative and competitive forces). Additional empirical work will aim at addressing specific visual constraints, including size and shape of the figure.
No relevant competing interests disclosed.
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