What are the three types of tracts found in cerebral white matter?

What are the three types of tracts found in cerebral white matter?

There are three main kinds of white matter tracts: projection, commissural, and association.

What are brain fiber tracts?

Projection fibers of the brain, also known as projection tracts of the brain are a type of white matter tract that connects the cortex with other areas in the CNS, e.g. deep nuclei, brainstem, cerebellum or spine. They may be efferent (motor) or afferent tracts (sensory).

Which brain imaging technique shows the integrity of white matter pathways in the brain?

Diffusion tensor magnetic resonance imaging (DT-MRI) is the method of choice for assessing brain white matter tract integrity in vivo.

What is the corpus callosum or white matter?

The corpus callosum is the largest white matter structure in the brain, consisting of 200-250 million contralateral axonal projections and the major commissural pathway connecting the hemispheres of the human brain.

What are the different white matter tracts?

What do white matter tracts connect?

White matter nerve fibers connect the cerebrum with the spinal cord and other areas of the brain. There are three main types of white matter nerve fiber tracts: commissural fibers, association fibers, and projection fibers.

What is white matter integrity?

White matter integrity, as measured by diffusion tensor imaging, distinguishes between impaired and unimpaired older adult decision-makers: A preliminary investigation. J Cogn Psychol (Hove).

What is white matter vs grey matter?

Grey matter is distinguished from white matter in that it contains numerous cell bodies and relatively few myelinated axons, while white matter contains relatively few cell bodies and is composed chiefly of long-range myelinated axons. The colour difference arises mainly from the whiteness of myelin.

How does white matter develop?

White matter, which lies beneath the gray matter cortex, is composed of millions of bundles of axons (nerve fibers) that connect neurons in different brain regions into functional circuits. It is formed by nonneuronal cells, oligodendrocytes, which wrap up to 150 layers of tightly compressed cell membrane around axons.