Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA 02139, USA.
IEEE Trans Neural Syst Rehabil Eng. 2010 Jun;18(3):329-35. doi: 10.1109/TNSRE.2009.2039605. Epub 2010 Jan 15.
Intermuscular coherence in the beta band was explored as a possible indicator of vocal hyperfunction, a common condition associated with many voice disorders. Surface electromyography (sEMG) was measured from two electrodes on the anterior neck surface of 18 individuals with vocal nodules and 18 individuals with healthy normal voice. Coherence was calculated from sEMG activity gathered while participants produced both read and spontaneous speech. There was no significant effect of speech type on average coherence. Individuals with vocal nodules showed significantly lower mean coherence in the beta band (15-35 Hz) when compared to controls. Results suggest that bilateral EMG-EMG beta coherence in neck strap muscle during speech production shows promise as an indicator of vocal hyperfunction.
探讨了β频段的肌间相干性作为发声过度(一种与许多嗓音障碍相关的常见病症)的一个可能指标。表面肌电图(sEMG)通过在前颈部表面的两个电极测量 18 名声带结节患者和 18 名正常嗓音的个体。在参与者产生朗读和自发语音时,从 sEMG 活动中计算出相干性。平均相干性不受言语类型的显著影响。与对照组相比,声带结节患者的β频段(15-35 Hz)的平均相干性显著降低。结果表明,在言语产生过程中,颈带肌肉的双侧肌电图-肌电图β相干性有望成为发声过度的指标。