Texture segregation is processed by primary visual cortex in man and monkey. Evidence from VEP experiments.

V A Lamme; B W Van Dijk; H Spekreijse

doi:10.1016/0042-6989(92)90022-b

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Texture segregation is processed by primary visual cortex in man and monkey. Evidence from VEP experiments.

V A Lamme·B W Van Dijk·H Spekreijse

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Abstract

We investigated whether the process of texture segregation can be allocated to a specific visual cortical area. We designed a stimulus to reveal the presence of a mechanism, which is specifically sensitive to a checkerboard, that is solely defined by textures segregating due to orientation differences of the constituting line segments. We recorded evoked potentials to this stimulus in man and awake monkey. A difference component, signalling texture segregation sensitivity, could be recorded from both types of subjects. Its presence depended on the spatial extent of the textures, in a manner correlating with the perceptibility of the checkerboard. This difference response could be localized in primary visual cortex by means of equivalent dipole estimations.

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Animals Brain Mapping Electroencephalography Evoked Potentials, Visual Humans Macaca Pattern Recognition, Visual Rotation Visual Cortex Journal Article

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V A Lamme, B W Van Dijk, H Spekreijse. 1992. Texture segregation is processed by primary visual cortex in man and monkey. Evidence from VEP experiments.. https://doi.org/10.1016/0042-6989(92)90022-b

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