Motor impairment following blockade of the infraorbital nerve: implications for the use of anesthetization techniques in speech research.
Motor impairment following blockade of the infraorbital nerve: implications for the use of anesthetization techniques in speech research.
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眶下神经阻断后的运动障碍：对言语研究中使用麻醉技术的影响。
DOI：
10.1044/jshr.1901.19
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发表时间：
1976
期刊：
影响因子：
--
通讯作者：
M. Sivarajan
中科院分区：
文献类型：
--
作者：
J. Abbs;J. Folkins;M. Sivarajan
对三名受试者进行双侧眶下神经阻滞，作为对面部肌肉运动神经支配的一部分由三叉神经提供的假设的部分测试。为了确定该麻醉过程的影响，在麻醉前和麻醉后，转导并记录上唇位移的幅度和速率（对于言语和非言语任务）、上唇下压力的幅度和速率以及介电动力学速率。所有测量值，以及针对所有力和位移任务获得的上口轮匝肌的双侧肌肉动作电位，都随着麻醉条件的变化而降低。这些发现以及之前言语麻醉研究的结果被解释为表明，眶下神经的麻醉会在口上肌肉组织中产生可测量的（即使不是显着的）运动无力。讨论了对先前使用麻醉技术的研究的影响。
Infraorbital nerve blocks were performed bilaterally in three subjects as a partial test of the hypothesis that some portion of the motor innervation to the facial muscles is provided in the trigeminal nerve. To ascertain the influence of this anesthetic procedure, the magnitude and rate of upper lip displacement (for speech and nonspeech tasks), the magnitude and rate of upper lip depression force, and diadochokinetic rate were transduced and recorded, both pre- and postanesthesia. All measures, along with bilateral muscle action potentials from orbicularis oris superior obtained for all force and displacement tasks, were reduced in magnitude as a function of the anesthetic condition. These findings, along with results from previous speech anesthetic studies, were interpreted to suggest that anesthesia of the infraorbital nerve produces measurable, if not substantial motor weakness in the supraoral musculature. The implications for previous studies, where anesthesia techniques have been employed, are discussed.