Facial nerve injury induces facilitation of responses in both trigeminal and facial nuclei of rat

Kis, Zsolt and Rákos, Gabriella and Farkas, Tamás and Horváth, Szatmár and Toldi, József (2004) Facial nerve injury induces facilitation of responses in both trigeminal and facial nuclei of rat. Neuroscience Letters, 358. pp. 223-225. ISSN 0304-3940

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Abstract

Astudywasmade of the effects of facial nerve transection on trigeminal stimulation- evoked field potentials in the principal trigeminal (Pr5) and facial nuclei (7) in rats. Although the transected branch of the facial nerve contains puremotoric efferents, it resulted in enhanced responses in both Pr5 and 7. These electrophysiological results suggest a functional circuitry involving thewhiskers, trigeminal nerve, Pr5 and 7 and the facial nerve as efferent. The disconnection (opening) of this loop results in enhanced responsiveness of the neurons in both Pr5 and 7.

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