Daniel B, Guitar B
J Speech Hear Disord. 1978 Feb;43(1):9-20. doi: 10.1044/jshd.4301.09.
A case report is presented of an attempt to increase muscle activity during nonspeech 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.
本文呈现了一个病例报告，内容是尝试通过表面肌电图反馈来增加非言语和言语活动期间的肌肉活动。该受试者为一名25岁男性，在开始这种治疗的五年前，其第七颅神经与第十二颅神经进行了外科吻合。面部右侧无法活动。在按压、回缩、外翻和言语过程中，来自右下唇的肌肉动作电位的频率模拟信号呈现给受试者。他的任务是增加音调频率，从而增加肌肉活动。受试者在上述手势方面有显著改善。电极还被放置在眶下的不同位置用于上唇提升任务。这个手势没有改善。发现治疗前后面部手势与有意识的舌头收缩无关。针对以下几点提出了可能的解释：（1）下唇肌肉活动的增加；（2）上唇动作电位没有变化；（3）面部肌肉活动与有意识的舌头收缩无关；（4）这种反馈训练的有效性。
