The present study investigated the voice quality associated with adductor spasmodic dysphonia by means of various acoustical measures. Energy distribution analyses and nonlinear dynamical measurements were used to depict the differences among voices associated with adductor spasmodic dysphonia (ADSD), vocal nodules (VN) and normal voices. Possible acoustical differences between voices associate...

Ten subjects with adductor spasmodic dysphonia participated in a study examining the effects of an acupuncture treatment protocol on their voice disorder. Treatment consisted of eight sessions, and it was designed and performed by two physicians certified in acupuncture. Voice characteristics were evaluated pretreatment and posttreatment using the CSL Motor Speech Profile (MSP), Unified Spasmod...

OBJECTIVE To evaluate the long-term aerodynamic, acoustic, and electromyographic effects of serial botulinum toxin (BT) injections in patients with adductor spasmodic dysphonia. DESIGN Two-year, nonrandomized, controlled, before-after study. SETTING Ambulatory care clinic at a single academic medical center. PATIENTS A convenience sample of 91 patients with adductor spasmodic dysphonia ev...

Seventeen patients with choreiform, athetoid, or ballistic involuntary movements, or with spasmodic torticollis, were treated with tetrabenazine in doses of 25 to 200 mg daily for periods varying from two weeks to more than six months. Randomized ciné film of the patients' involuntary movements, taken before, during, and after treatment was assessed individually by seven `blind' observers. Eigh...

This paper reports on an evidence-based review of laryngeal electromyography (EMG) as a technique for use in the diagnosis, prognosis, and treatment of laryngeal movement disorders including the laryngeal dystonias, vocal fold paralysis, and other neurolaryngological disorders. The authors performed a systematic review of the medical literature from 1944 through 2001 on the clinical application...

OBJECTIVES This study characterized the relationship between relative fundamental frequency (RFF) and listeners' perceptions of vocal effort and overall spasmodic dysphonia severity in the voices of 19 individuals with adductor spasmodic dysphonia. METHODS Twenty inexperienced listeners evaluated the vocal effort and overall severity of voices using visual analog scales. The squared correlati...