Non-reciprocal postsynaptic inhibition of digastric motoneurons.
Brain Res
; 535(2): 339-42, 1990 Dec 10.
Article
em En
| MEDLINE
| ID: mdl-2073613
This study was undertaken to explore the effects, on digastric motoneurons, of electrical stimulation of a site within the parvocellular medullary reticular formation (PcRF). This site is located lateral to the hypoglossal nucleus and ventral to the dorsal motor nucleus of the vagus nerve. Within this site are somas of premotor interneurons that project to trigeminal motor nuclei. Stimulation of this site resulted in the generation of IPSPs in digastric motoneurons. We postulate that these IPSPs were due to the activation of a monosynaptic path from the PcRF to digastric motoneurons. The present results, in conjunction with those previously reported which indicate that the PcRF also induces monosynaptic IPSPs in masseter motoneurons, demonstrate that this is a site of origin for the postsynaptic inhibitory control of motoneurons that innervate both jaw opening and closing muscles.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Sinapses
/
Neurônios Motores
/
Músculos do Pescoço
Limite:
Animals
Idioma:
En
Revista:
Brain Res
Ano de publicação:
1990
Tipo de documento:
Article
País de afiliação:
Uruguai
País de publicação:
Holanda