Article: article from journal or magazin.
The colour centre in the cerebral cortex of man.
Publication types: Journal Article ; Research Support, Non-U.S. Gov'tPublication Status: ppublish
Anatomical and physiological studies have shown that there is an area specialized for the processing of colour (area V4) in the prestriate cortex of macaque monkey brain. Earlier this century, suggestive clinical evidence for a colour centre in the brain of man was dismissed because of the association of other visual defects with the defects in colour vision. However, since the demonstration of functional specialization in the macaque cortex, the question of a colour centre in man has been reinvestigated, based on patients with similar lesions in the visual cortex. In order to study the colour centre in normal human subjects, we used the technique of positron emission tomography (PET), which measures increases in blood flow resulting from increased activity in the cerebral cortex. A comparison of the results of PET scans of subjects viewing multi-coloured and black-and-white displays has identified a region of normal human cerebral cortex specialized for colour vision.
Cerebral Cortex/blood supply, Cerebral Cortex/physiology, Color Perception/physiology, Functional Laterality, Humans, Male, Temporal Lobe/physiology, Tomography, Emission-Computed
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