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MA Yong-Jie

2College of Information Engineering, Taishan Medical University, Taian 271016, China

Abstract

Effects of electrical and chemical stimulation of the dorsal and ventral areas of the nucleus raphe dorslis(dNRD and vNRD)on genioglossus and diaphragm activities were observed in 48 urethan-anasthetized and vagotomized raddits.(1)Long train electrical stimulation at the dNRD facilitated genioglossus and diaphragm activities.(2)Long train electrical stimulation delivered to the vNRD excited genioglOssus activity but inhibited diaphragm activity.(3)Effects of microinjection of glutamate at the dNRD and vNRD were simillar to the effects of electrical stimulation.The above results suggest that excitation of nucleus raphe dorsalis(NRD)increases genioglossus activity and reduces upper airway resistance.The dNRD and vNRD play different roles in modulating diaphragm activity.

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Citing This Article：

MA Yong-Jie. . Acta Physiol Sin 1998; 50 (1): (in Chinese with English abstract).