Nociceptive craniofacial muscle primary afferent neurons synapse in both the rostral and caudal brain stem.

Limited information is available on muscle afferent neurons with fine fibers despite their presumed participation in musculoskeletal disorders, including temporomandibular disorders. To study these neurons, intracellular recordings were made from the central axons of slowly conducting muscle afferent neurons in anesthetized rats. After intraaxonal… CONTINUE READING