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Biological: Behavioural genetics · Evolutionary psychology · Neuroanatomy · Neurochemistry · Neuroendocrinology · Neuroscience · Psychoneuroimmunology · Physiological Psychology · Psychopharmacology (Index, Outline)
| Brain: Mesencephalic nucleus of trigeminal nerve | ||
|---|---|---|
 | ||
| The cranial nerve nuclei schematically represented; dorsal view. Motor nuclei in red; sensory in blue. (Trigeminal nerve nuclei are at "V".) | ||
| [[Image:|250px|center|]] | ||
| Latin | nucleus mesencephalicus nervi trigemini | |
| Gray's | subject #187 787 | |
| Part of | ||
| Components | ||
| Artery | ||
| Vein | ||
| BrainInfo/UW | hier-550 | |
| MeSH | A08.186.211.132.931 | |
The mesencephalic nucleus is involved with proprioception, that is, the feeling of position of the muscles. Unlike many nuclei within the CNS, the mesencephalic nucleus contains no chemical synapses but are electrically coupled (Baker and Llinas1971). Instead, neurons of this nucleus are pseudounipolar cells receiving proprioceptive information from the jaw, and sending projections to the motor trigeminal nucleus to mediate monosynaptic jaw jerk reflex.
Baker, R.G. and Llinas, R. Electrotonic coupling between neurones in the rat mesencephalic nucleus. J. Physiology 212: 45-63, 1971.
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