11. The lateral lemniscus is located where the cochlear nuclei and the pontine reticular formation ( PRF ) crossover. 12. Additional projection targets include the dorsal and ventral nuclei of the lateral lemniscus ( DNLL & VNLL ). 13. The axons of the nucleus gracilis and nucleus cuneatus in the medial lemniscus have cell bodies that lie contralaterally. 14. At this point, second order neurons decussate and relay information through the contralateral medial lemniscus to the thalamus. 15. This includes the corticospinal tract ( motor ), the posterior column-medial lemniscus pathway ( crude touch ). 16. From the principal nucleus, secondary fibers cross the midline and ascend in the trigeminal lemniscus to the contralateral thalamus. 17. At the medulla, the medial lemniscus is orientated perpendicular to the way the fibres travelled in the posterior columns. 18. The posterior column medial lemniscus pathway is responsible for relaying sensory information regarding proprioception, vibration, and fine touch. 19. At the medial lemniscus , axons from the leg are more ventral, and axons from the arm are more dorsal. 20. The majority of the ascending fibers from the lateral lemniscus project to IC, which means major ascending auditory pathways converge here.
