NEUROPHYSIOLOGICAL BASES OF PHONATION AND VOICE DISORDERS

目的是确定生物力学和生物力学性能 喉内脏的神经生理学关系 用于说话、发声、呼吸和吞咽的肌肉。精神障碍 如痉挛性发音困难和声音震颤也在研究中 通过相同的程序。甲状旁腺和环甲状旁腺 (CT)肌肉的激活变化与 正常扬声器中所有动作的时间。百分比的比例 正常情况下，TA比CT的增加在0.7到1.2之间 志愿者中有2至12人患有痉挛性发音困难。这些 患者在呼吸中TA高于CT的激活， 吞咽和说话。痉挛中发现的其他异常 发音困难包括：发音前肌肉激活时间延长 TA和CT肌肉的言语起始和痉挛发作 在演讲过程中。 一种新的非侵入性咽-食管面的有效性 用于记录来自环踝后区的活动的电极 在接受测试的受试者中，有60%的人表现出前列腺癌。未来 研究将比较PCA、 主要声带外展者，以及正常说话者的TA和CT 内收肌和外展肌痉挛发音困难患者。

The objective is to determine the biomechanical and neurophysiological relationship between the intrinsic laryngeal muscles for speech, voice, respiration, and swallow. Disorders such as spasmodic dysphonia and voice tremor are also being studied by the same procedures. The thyroarytenoid (TA) and cricothyroid (CT) muscles are highly related in their change in activation over time for all actions in normal speakers. The ratio of percent increase in the TA over the CT Is between 0.7 and 1.2 in normal volunteers and between 2 and 12 in spasmodic dysphonia. These patients have heightened TA over CT activation in respiration, swallow and speech. Other abnormalities found in spasmodic dysphonia include: prolonged muscle activation times prior to speech onset and spasmodic bursts in both the TA and CT muscles during speech. The validity of a new non-invasive pharyngeal-esophageal surface electrode for recording activity from the posterior cricoarytenoid (PCA) was demonstrated In 60% of the subjects tested. Future studies will compare the percent activation between the PCA, the major vocal fold abductor, and the TA and CT in norma speakers and patients with adductor and abductor spasmodic dysphonia.