Pharyngeal motoneurones: respiratory-related activity and responses to laryngeal afferents in the decerebrate cat
Pharyngeal motoneurones: respiratory-related activity and responses to laryngeal afferents in the decerebrate cat
复制标题
咽运动神经元：去大脑猫的呼吸相关活动和对喉传入的反应
作者：
L. Grélot;J. Barillot;A. Bianchi
摘要在去大脑、瘫痪和人工通气的猫中，我们记录了供应咽部肌肉的 64 个运动轴突的放电。含有运动轴突的细丝，与呼吸周期（膈神经活动）相关的放电，是从迷走神经和舌咽神经的咽支中引出的。大多数单位（n = 41）仅在呼气时放电，并表现出稳定、减少或后期增加的放电模式。这些单位只在迷走神经丝中发现。二十三个单位在吸气期间放电，并表现出稳定、后期增强或强直放电模式。吸气相关单位存在于迷走神经 (n=13) 和舌咽神经 (n=10) 中。所测试的 20 个咽部吸气相关单位中有 19 个通过刺激喉上神经 (SLN) 的传入神经而在短潜伏期（范围 3.4 至 8.0 毫秒）内被激活。在其中 13 例中，这种刺激还抑制了他们的自发活动。 SLN 刺激在所有 17 个咽部呼气相关单元中引发测试，测试显示短潜伏期（范围 0 至 8 毫秒）活动减少，随后在 7 个单元中活动增加。前哨淋巴结刺激偶尔会引起迷走神经咽丝中的单纤维或多纤维爆发。这些涉及呼气相关单位的爆发可能对应于吞咽的颊咽阶段。
SummaryIn decerebrate, paralyzed and artificially ventilated cats, we recorded the discharge of 64 motor axons supplying the pharyngeal muscles. Filaments containing motor axons, with discharges related to the respiratory cycle (phrenic nerve activity), were teased from the pharyngeal branches of the vagus and glossopharyngeal nerves. Most units (n = 41) fired only during expiration and exhibited a steady, a decreasing or a late augmenting discharge pattern. These units were found only in vagal filaments. Twenty three units discharged during inspiration and exhibited a steady, a late augmenting or a tonic discharge pattern. The inspiratory-related units were present in both the vagus (n=13) and glossopharyngeal (n=10) nerves. Nineteen of 20 pharyngeal inspiratoryrelated units tested were activated at short latency (range 3.4 to 8.0 ms) by stimulation of afferents in the superior laryngeal nerve (SLN). In 13 of these, such stimulation also suppressed their spontaneous activity. SLN stimulation elicited in all 17 pharyngeal expiratory-related units tested a short latency (range 0 to 8 ms) reduction of activity, followed in 7 units by an increase in activity. SLN stimulation occasionally evoked single or rhythmic multifibre bursts in the vagal pharyngeal filaments. These bursts, involving expiratory-related units, likely correspond to the buccopharyngeal stage of swallowing.
延髓吸气神经元在猫食道刺激过程中控制膈肌的作用。
DOI：
10.1113/jphysiol.1987.sp016738
发表时间：
1987
期刊：
The Journal of physiology
影响因子：
--
作者：
Altschuler,SM;Davies,RO;Pack,AI
通讯作者：
Pack,AI
清醒猫的上呼吸道肌肉活动的变化与头部位置相关。
DOI：
10.1016/0034-5687(85)90102-1
发表时间：
1985
期刊：
Respiration physiology
影响因子：
--
作者：
Bonora,M;BartlettJr,D;Knuth,SL
通讯作者：
Knuth,SL
喉传入对呼气球脊髓神经元和运动神经元的影响。
DOI：
10.1152/jappl.1988.64.4.1337
发表时间：
1988
期刊：
Journal of applied physiology (Bethesda, Md. : 1985)
影响因子：
--
作者：
Jodkowski,JS;Berger,AJ
通讯作者：
Berger,AJ