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  2. White matter - Wikipedia

    en.wikipedia.org/wiki/White_matter

    White matter is composed of bundles, which connect various grey matter areas (the locations of nerve cell bodies) of the brain to each other, and carry nerve impulses between neurons. Myelin acts as an insulator, which allows electrical signals to jump , rather than coursing through the axon, increasing the speed of transmission of all nerve ...

  3. Cerebral hemisphere - Wikipedia

    en.wikipedia.org/wiki/Cerebral_hemisphere

    The brain can thus be described as being divided into left and right cerebral hemispheres. Each of these hemispheres has an outer layer of grey matter, the cerebral cortex, that is supported by an inner layer of white matter. In eutherian (placental) mammals, the hemispheres are linked by the corpus callosum, a very large bundle of nerve fibers.

  4. Grey matter - Wikipedia

    en.wikipedia.org/wiki/Grey_matter

    Grey matter contains most of the brain's neuronal cell bodies. [6] The grey matter includes regions of the brain involved in muscle control, and sensory perception such as seeing and hearing, memory, emotions, speech, decision-making, and self-control. The grey matter in the spinal cord is split into three grey columns:

  5. Cingulate cortex - Wikipedia

    en.wikipedia.org/wiki/Cingulate_cortex

    A study of the volume of the gray and white matter in the anterior cingulate gyrus in people with schizophrenia and their healthy first and second degree relatives revealed no significant difference in the volume of the white matter in the people with schizophrenia and their healthy relatives.

  6. Human brain - Wikipedia

    en.wikipedia.org/wiki/Human_brain

    The cerebellum consists of an inner medulla of white matter and an outer cortex of richly folded grey matter. [35] The cerebellum's anterior and posterior lobes appear to play a role in the coordination and smoothing of complex motor movements, and the flocculonodular lobe in the maintenance of balance [ 36 ] although debate exists as to its ...

  7. Uncinate fasciculus - Wikipedia

    en.wikipedia.org/wiki/Uncinate_fasciculus

    The uncinate fasciculus is a white matter association tract in the human brain that connects parts of the limbic system such as the temporal pole, anterior parahippocampus, and amygdala in the temporal lobe with inferior portions of the frontal lobe such as the orbitofrontal cortex.

  8. Claustrum - Wikipedia

    en.wikipedia.org/wiki/Claustrum

    The claustrum is a small bilateral gray matter structure (comprising roughly 0.25% of the cerebral cortex) located deep to the insular cortex and extreme capsule, and superficial to the external capsule and basal ganglia.

  9. Substantia innominata - Wikipedia

    en.wikipedia.org/wiki/Substantia_innominata

    The substantia innominata, also innominate substance or substantia innominata of Meynert (Latin for unnamed substance), is a series of layers in the human brain consisting partly of gray and partly of white matter, which lies below the anterior part of the thalamus and lentiform nucleus.