Damage to the body above the pyramidal decussation will cause contralateral motor deficits. The medulla is above the decussation and the spinal cord below. Whereas damage below the pyramidal decussation will result in ipsilateral motor deficits. This was to become known as "Meynert's decussation" or as "fountain decussation". The decussation of sensory fibers happens at this point. Abnormal decussation of fibers at the linea alba may contribute. A tract may also be referred to as a commissure, fasciculus or decussation. The ascending bundle after the decussation is called the medial lemniscus. The pyramidal decussation marks the border between the spinal cord and the medulla oblongata. These fibres decussate (cross) to the contralateral (opposite) side, so called the sensory decussation. A decussation denotes a crossing of bundles of axonal fibres inside the central nervous system. Decussation usually occurs 1-2 spinal nerve segments above the point of entry.