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Cerebral achromatopsia occurs after injury to the lingual or fusiform gyrus, the areas associated with hV4. These injuries include physical trauma, stroke, and tumour growth. One of the primary initiatives to locating the colour centre in the visual cortex is to discover the cause and a possible treatment of cerebral achromatopsia.
Color processing in the extended V4 occurs in millimeter-sized color modules called globs. [30] [31] This is the part of the brain in which color is first processed into the full range of hues found in color space. [37] [30] [31] Anatomical studies have shown that neurons in extended V4 provide input to the inferior temporal lobe. "IT" cortex ...
Blobs are sections of primary visual cortex (V1) above and below layer IV where groups of neurons sensitive to color assemble in cylindrical shapes. They were first identified in 1979 by Margaret Wong-Riley in cats when she used a cytochrome oxidase stain, from which they get their name. [ 1 ]
The color of chemicals is a physical property of chemicals that in most cases comes from the excitation of electrons due to an absorption of energy performed by the chemical. The study of chemical structure by means of energy absorption and release is generally referred to as spectroscopy .
Neuromelanin gives specific brain sections, such as the substantia nigra or the locus coeruleus, distinct color. It is a type of melanin and similar to other forms of peripheral melanin. It is insoluble in organic compounds, and can be labeled by silver staining. It is called neuromelanin because of its function and the color change that ...
The chemical makeup of the brain was nearly identical to the makeup of the peripheral nervous system. [1] The first large leap forward in the study of neurochemistry came from Johann Ludwig Wilhelm Thudichum , who is one of the pioneers in the field of "brain chemistry."
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Grapheme–color synesthetes tend to have an increased thickness, volume and surface area of the fusiform gyrus. [2] Furthermore, the area of the brain where word, letter and color processing are located, V4a, is where the most significant difference in make-up was found. Though not certain, these differences are thought to be part of the ...