what is white matter?

Answer 1

part of CNS

Answer 2

Intelligence may be more of a gray matter for men and a white matter for women, according to a new study.

Researchers found major differences in the amount of gray and white matter in the brains of men and women of the same intelligence, suggesting that men and women may derive their intelligence in different ways.

Researchers say white and gray matter are both necessary for general intelligence, but they perform different functions. Gray matter represents information processing centers in the brain, and white matter represents the network or connections between those processing centers.

Answer 3

White matter is the name given to parts of the brain and spinal cord that are responsible for communication between the various grey matter regions and between the grey matter and the rest of the body.

Answer 4

White matter is one of the two main solid components of the central nervous system. It is composed of myelinated nerve cell processes, or axons, which connect various grey matter areas (the locations of nerve cell bodies) of the brain to each other and carry nerve impulses between neurons. Cerebral and spinal white matter do not contain dendrites, which can only be found in grey matter along with neural cell bodies and shorter axons.

Generally, white matter can be understood as the parts of the brain and spinal cord responsible for information transmission; whereas, grey matter is mainly responsible for information processing. Changes in white matter known as amyloid plaques are associated with Alzheimer's disease and other neurodegenerative diseases. White matter injuries ("axonal shearing") may be reversible, while grey matter regeneration is less likely.

White matter forms the bulk of the deep parts of the brain and the superficial parts of the spinal cord. Aggregates of grey matter such as the basal ganglia (caudate nucleus, putamen, globus pallidus, subthalamic nucleus, nucleus accumbens) and brain stem nuclei (red nucleus, substantia nigra, cranial nerve nuclei) are spread within the cerebral white matter.

The cerebellum is structured in a similar manner as the cerebrum, with a superficial mantle of cerebellar cortex, deep cerebellar white matter (called the "Arbor Vitae") and aggregates of grey matter surrounded by deep cerebellar white matter (dentate nucleus, globose nucleus, emboliform nucleus, and fastigial nucleus). The fluid-filled cerebral ventricles (lateral ventricles, third ventricle, cerebral aqueduct, fourth ventricle) are also located deep within the cerebral white matter.

In 1983, M. C. Raff et al. discovered that tissue samples originating from rat optic nerve contained two morphologically distinct types of astrocytes. So-called Type 1 astrocytes had a fibroblast appearance and resided in both grey matter and white matter, whereas Type 2 astrocytes has a neuron-like appearance and resided in white matter alone (Sherman, Chris).

In general, pathological liars have 22% more white matter compared with non-liars.[1]

Answer 5

White and gray matter are brain tissue.

Answer 6

it is matter which is white, not black!!!