Crossing Over (Decussation) of Somatosensory Afferent Information Occurs in The

Question

Crossing over (decussation) of somatosensory afferent information occurs in the
A) Spinal cord at the level of entry of the spinal nerves
B) Dorsal column pathway
C) Medulla
D) Thalamus
E) Cerebral cortex

Accepted Answer

Crossing over (decussation) of somatosensory afferent information primarily occurs in the medulla. This is particularly true for the dorsal column-medial lemniscal pathway, where the fibers carrying touch and proprioceptive information cross to the opposite side in the medulla before ascending to the thalamus.