Electromyography of the intrinsic laryngeal muscles during phonation.
| Number | 118 |
|---|---|
| Year | 1972 |
| Drawer | 2 |
| Entry Date | 05/21/1998 |
| Authors | Gay, T., Hirose, H., Strome, M., & Sawashima, M. |
| Contact | |
| Publication | Annals of Otology, Rhinology and Laryngology, 81, 401-409. |
| url | http://www.haskins.yale.edu/Reprints/HL0118.pdf |
| Abstract | [Introduction] Electromyographic (EMG) studies of the laryngeal muscles during phonation have been widely reported in the literature, with the classic experiments of Faaborg-Andersen in particular, providing a basis for describing the laryngeal control of phonation. Nonetheless, a number of questions regarding the control of fundamental frequency and intensity within and across vocal registers and the reliability of EMG measures, in general, have remained unanswered. This was due, largely, to the technical problems inherent in using concentric needle electrodes and the difficulty in extrapolating subtle changes in muscle activity patterns from raw EMG data. However, recent advances in both EMG recording and processing techniques have provided the necessary capability for answering these questions. On the one hand, hooked wire electrode insertion techniques have enabled the simultaneous recording of the intrinsic laryngeal musculature with a minimum of equipment interference and subject discomfort. Also, the use of a digital computer to average the integrated EMG curves of a number of tokens of a given vocal maneuver has provided a convenient and accurate means of displaying the average strength of contraction of a given muscle or muscle group. The primary purpose of this experiment was to describe, in detail, the actionsof the intrinsic laryngeal muscles during various vocal frequency and intensity changing maneuvers. In addition, the conditions of the experiment were designed to simulate those of an earlier study, in order to obtain data on the reliability of repeated EMG measurements. |
| Notes |
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