Electromyographic effects of serotonin application into the lateral vestibular nucleus
作者:
Guido Li Volsi,
Flora Licata,
Lucia Ciranna,
Cinzia Caserta,
Francesca Santangelo,
期刊:
NeuroReport
(OVID Available online 1998)
卷期:
Volume 9,
issue 11
页码: 2539-2544
ISSN:0959-4965
年代: 1998
出版商: OVID
关键词: Electromyography;5-Hydroxytryptamine;Lateral vestibular nucleus;Microiontophoresis;Motor control;Rat
数据来源: OVID
摘要:
ELECTROMYOGRAPHIC responses (EMGs) of limb muscles were studied during microiontophoretic application of 5-hydroxytryptamine (5-HT) into the lateral vestibular nucleus (LVN) or the spinal vestibular nucleus (SpVe) of anaesthetized rats. The aim was to ascertain whether the level of 5-HT in these nuclei was able to modulate muscle responsiveness. Increased levels of 5-HT in LVN (and to a weaker extent in SpVe) enhanced the EMGs of proximal extensor muscles and depressed those of flexors. The 5-HT2Areceptor antagonist ketanserin, applied into the LVN, prevented 5-HT effects on EMG-evoked responses. It is concluded that 5-HT can modulate the motor output via the vestibulospinal pathway, exerting a differential control over flexor and extensor muscles.
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