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Published on: February 20, 2014
Neuronal activity during discrimination of shapes defined by motion in area V4
Takashi Handa1, Masato Inoue, Akichika Mikami
1Department of Behavioral and Brain Sciences, Primate Research Institute, Kyoto University, Inuyama, Aichi, Japan.
Abstract:
To investigate the neuronal mechanisms of motion-defined shape processing, we examined single-neuron activity in area V4 in monkeys performing a shape discrimination task under the shape-from-motion (SFM) condition, in which a motion cue is critical for shape perception, and under the shape-from-luminance (SFL) condition, in which a luminance cue is critical. About 35% (30 of 86) of neurons responded selectively to shapes under both the SFM and SFL conditions. These neurons showed a similar shape preference between the SFM and SFL conditions. There was a weak tendency of lower shape selectivity in error trials. These results suggest the involvement of V4 in SFM processing as well as in SFL processing.
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