PMID: 8459288Feb 1, 1993Paper

Trigeminal premotor neurons in the bulbar parvocellular reticular formation participating in induction of rhythmical activity of trigeminal motoneurons by repetitive stimulation of the cerebral cortex in the guinea pig

Journal of Neurophysiology
S NozakiY Nakamura

Abstract

1. Single-unit activity was recorded from neurons in the bulbar parvocellular reticular formation (PCRF) dorsal and dorsolateral to the gigantocellular reticular nucleus near its caudal boundary, and the roles of these reticular neurons in induction of rhythmical activity of trigeminal motoneurons by repetitive stimulation of the cerebral cortex (the cortical masticatory area, CMA) were studied in the paralyzed guinea pig anesthetized with urethan or with ketamine and chlorpromazine. 2. One hundred nine PCRF neurons were activated antidromically by microstimulation in either the masseter (MA) or anterior digastric (AD) motoneuron pool in the ipsilateral trigeminal motor nucleus, and orthodromically by stimulation in the contralateral CMA. Repetitive CMA stimulation induced rhythmical burst activity in these PCRF neurons in association with the rhythmical field potential in the contralateral AD motoneuron pool induced by the same CMA stimulation. The burst was synchronous with the rhythmical AD field potential in 81 neurons, 44 and 37 of which responded antidromically to stimulation in the MA and AD motoneuron pools, respectively. The remaining 28 neurons antidromically responded to stimulation in the MA motoneuron pool, and the...Continue Reading

Citations

Oct 18, 2005·The Journal of Comparative Neurology·Nobuhiko HatanakaMasahiko Takada
Jan 5, 2002·The Journal of Comparative Neurology·Alexis M HattoxAsaf Keller
Jun 10, 2011·Journal of Neurophysiology·Peter B Schwarz, John H Peever
Jun 5, 2020·Journal of Oral Science·Susumu TanakaMikihiko Kogo
Feb 1, 2012·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Zhihong LiJinlian Li

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