White commissure

White Commissure is a small bundle of nerve fibers that cross the midline of the brain just above the spinal cord. It is part of the central nervous system and plays a crucial role in transmitting nerve impulses between the two hemispheres of the brain.

Anatomy

The white commissure is located anterior to the aqueduct of Sylvius and posterior to the anterior commissure. It is composed of commissural fibers that connect the two cerebral hemispheres. The fibers of the white commissure are smaller and more compact than those of the anterior commissure.

Function

The primary function of the white commissure is to facilitate communication between the two hemispheres of the brain. It allows for the transfer of information from one side of the brain to the other, contributing to the integration of sensory and motor signals.

Clinical Significance

Damage to the white commissure can result in a variety of neurological disorders. For example, it can lead to hemispatial neglect, a condition in which a person is unable to attend to or process stimuli on one side of the body. It can also result in split-brain syndrome, a condition characterized by a disconnection between the two hemispheres of the brain.

See Also

• Brain
• Central nervous system
• Anterior commissure
• Aqueduct of Sylvius