An electrophysiological study of trigeminal commissural interneurons in the anaesthetized rabbit.
The physiological characteristics of intertrigeminal area, nucleus oralis tau and supratrigeminal interneurons terminating in the contralateral-trigeminal motor nucleus were studied. Their antidromic conduction velocities were found to be between 3.7 and 16.3 m/s and most units had ipsilateral oral and peri-oral low threshold mechanoreceptive fields. Many received convergent inputs from both mandibular and maxillary divisions of the trigeminal nerve as well as the sensorimotor cortex.
Donga
R
R
Faculté de Médecine Dentaire, Université de Montréal, Qué., Canada.
Lund
J P
JP
Veilleux
D
D
D000200:Action Potentials; D000758:Anesthesia; D000818:Animals; D004525:Efferent Pathways / Q000502:physiology; D004558:Electric Stimulation; D007395:Interneurons / Q000502:physiology*; D009046:Motor Neurons / Q000502:physiology*; D011817:Rabbits; D011930:Reaction Time / Q000502:physiology; D014276:Trigeminal Nerve / Q000502:physiology*; D014278:Trigeminal Nuclei / Q000502:physiology*; D014279:Trigeminal Nucleus, Spinal / Q000502:physiology*