Recent literature indicates that electromyography (EMG) is of little value in the early determination of facial nerve degeneration. Since fibrillation may be absent in the recording, especially during the first ten days of the paresis, and since many neurons may be involved in an uncertain process of deterioration or recovery, electronic processing of the EMG and analysis of different features of many thousands of data are required. Our presentation of preliminary experience includes duration histogram, interspike interval histogram, amplitude histogram, and spike rate analysis. From these characteristics a synoptic classification may be introduced to the description of facial nerve diseases. Interlead interval histograms are demonstrated additionally for cases of facial spasm. Their result has reinforced our assumption that this disease shows features in the EMG that are different from peripheral facial nerve impairment.
Wigand ME, Spreng M, Bumm P, Mederer R. Electronic Evaluation of Electromyograms in Facial Nerve Paralysis. Arch Otolaryngol. 1972;95(4):324–330. doi:10.1001/archotol.1972.00770080518006
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