internal arcuate fibres , także: internal arcuate fibers AmE

Fibres from these nuclei will pass to the contralateral side of the brainstem, as the internal arcuate fibres.

The secondary neurons (that start in the nuclei) cross over to the other side of the medulla (as internal arcuate fibres) to form the medial lemniscus.

The fibres of this decussation are called the internal arcuate fibres and are found at the superior aspect of the closed medulla superior to the motor decussation.