The anterior spinal commissure connects the left and right sides of the spinal cord anteriorly. It is located between the posterior-most extent of the anterior median fissure anteriorly and the ventral grey matter commissure posteriorly 1.
It is composed of anterior and lateral spinothalamic tract fibers and anterior corticospinal tract 1,2.
Terminology
The anterior spinal commissure is sometimes referred to as the ventral white matter spinal commissure to distinguish it from the ventral grey matter commissure located immediately posterior to it, being part of the periependymal grey matter around the central canal of the spinal cord 1.