EMG Feedback and Recovery of Facial and Speech Gestures Following Neural Anastomosis A case report is presented of an attempt to increase muscle activity during non-speech and speech activities through surface electromyographic feedback. The subject, a 25-year-old male, had a surgical anastomosis of the seventh cranial to the twelfth cranial nerve five years prior to the initiation of this therapy. The right ... Articles
Articles  |   February 01, 1978
EMG Feedback and Recovery of Facial and Speech Gestures Following Neural Anastomosis
 
Author Notes
Article Information
Articles   |   February 01, 1978
EMG Feedback and Recovery of Facial and Speech Gestures Following Neural Anastomosis
Journal of Speech and Hearing Disorders, February 1978, Vol. 43, 9-20. doi:10.1044/jshd.4301.09
History: Received March 21, 1977 , Accepted May 23, 1977
 
Journal of Speech and Hearing Disorders, February 1978, Vol. 43, 9-20. doi:10.1044/jshd.4301.09
History: Received March 21, 1977; Accepted May 23, 1977

A case report is presented of an attempt to increase muscle activity during non-speech and speech activities through surface electromyographic feedback. The subject, a 25-year-old male, had a surgical anastomosis of the seventh cranial to the twelfth cranial nerve five years prior to the initiation of this therapy. The right side of the face was immobile. Frequency analogs of muscle action potentials from the right lower lip during pressing, retraction, eversion, and speech were presented to the subject. His task was to increase the frequency of the tone thereby increasing muscle activity. The subject made substantial improvement in the gestures listed above. Electrodes also were placed in various infraorbital positions for an upper lip lifting task. This gesture was unimproved. Pre- and posttherapy independence of facial gestures from conscious tongue contraction was found. Possible explanations were proposed for (1) increases of muscle activity in the lower lip, (2) lack of change of MAPs in the upper lip, (3) independence of the facial muscle activity from conscious tongue contraction, and (4) effectiveness of this feedback training.

Order a Subscription
Pay Per View
Entire Journal of Speech and Hearing Disorders content & archive
24-hour access
This Article
24-hour access