Kelleher M J, Gutnick H N, Prass R L
Department of Otolaryngology-Head and Neck Surgery, Eastern Virginia Medical School, Norfolk, Va.
Laryngoscope. 1990 Jun;100(6):570-5. doi: 10.1288/00005537-199006000-00003.
This study assesses the effect of using bipolar recording electrodes in the nasolabial crease versus using monopolar recording electrodes in the crease and on the nasal alae. Seven normal patients had three trials of facial-nerve electroneurography on three separate test days. Peak-to-peak amplitudes of combined motor action potentials were measured; amplitude variability was not affected by the measurement site. A biphasic waveform shape was most consistently obtained by using the nasal alae as the recording point rather than the nasolabial crease. We hypothesize that alar electrodes primarily detect combined motor action potential activity from relatively synchronous, fast-conducting facial-nerve fibers, while the combined motor action potential detected by electrodes in the nasolabial crease reflect a relatively complex summation of both fast and slow fibers.
本研究评估在鼻唇沟使用双极记录电极与在鼻唇沟及鼻翼使用单极记录电极的效果。七名正常患者在三个不同的测试日进行了三次面神经神经电图检查。测量了复合运动动作电位的峰峰值幅度；幅度变异性不受测量部位的影响。通过将鼻翼作为记录点而非鼻唇沟，最一致地获得了双相波形。我们推测，鼻翼电极主要检测来自相对同步、传导速度快的面神经纤维的复合运动动作电位活动，而鼻唇沟电极检测到的复合运动动作电位反映了快纤维和慢纤维的相对复杂总和。
