Behaviors of hypoglossal hyoid motoneurons in laryngeal and vestibular reflexes and in deglutition and emesis.
Behaviors of hypoglossal hyoid motoneurons in laryngeal and vestibular reflexes and in deglutition and emesis.
复制标题
舌下舌骨运动神经元在喉和前庭反射以及吞咽和呕吐中的行为。
DOI:
10.1152/ajpregu.1998.274.4.r950
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发表时间:
1998
期刊:
影响因子:
--
通讯作者:
Miller,AD
中科院分区:
文献类型:
--
作者:
Umezaki,T;Nakazawa,K;Miller,AD
Reflex responses of hypoglossal motoneurons innervating the geniohyoid (GH) and thyrohyoid (TH) muscles from the superior laryngeal (SLN) and vestibular nerves and their behaviors during fictive swallowing and vomiting were examined by recording both the extracellular activities of 11 single cells in the hypoglossal nucleus and GH and TH muscle nerve activity in eight decerebrate, paralyzed, and artificially ventilated cats. The majority of TH motoneurons were either active and/or exhibited shortened antidromic latencies during early expiration. In contrast, GH motoneurons did not exhibit any respiratory-related activity. Electrical single-shock stimulation of the SLN never evoked an excitatory reflex response on GH or TH motoneurons but rather evoked inhibitory responses on the THs. Unlike other hypoglossal motoneurons, GH and TH motoneurons do not appear to receive vestibular inputs. However, they can exhibit robust activities during fictive swallowing and vomiting, particularly during expulsion. Thus these motoneurons may play an important role in airway protection during swallowing and vomiting but not in controlling upper airway patency regulated by vestibular afferents.
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