Current and Recent Projects
- We are currently studying respiratory-based methods for the treatment of muscle tension dysphonia. Muscle tension dysphonia is a voice disorder that can be associated with over-activity in various voice-related muscles and altered respiratory and laryngeal behavior.
- We recently published the results of a double-blind, randomized control clinical trial addressing the effects of octanoic acid on voice in people who have essential voice tremor. Essential voice tremor is a neurological disorder that produces rhythmic, involuntary movements of the voice-related muscles and structures. We found that after octanoic acid, magnitude of acoustic tremor was reduced relative to the placebo condition.
- We study methods which may improve our reliability of visual-perceptual and auditory-perceptual ratings of voice disorders.
- We use radiographic imaging and ultrasound imaging to study the position of the hyoid and larynx during speech in people with and without voice disorders. Muscle tension dysphonia is a voice disorder that can be associated with over-activity in various voice-related muscles and an elevated laryngeal position. We found that people with muscle tension dysphonia showed higher laryngeal position during “ee” phonation on quantified measures taken from lateral x-rays, when compared to people without voice problems.
- We use acoustic, aerodynamic, and ultrasound measures to study the effects of treatment-related maneuvers and the distinguishing physiological features of people with and without voice disorders.
- We study the utility of specific acoustic measures of voice. These projects address the relationships of acoustic measures to auditory-perceptual measures, the applicability of measures to continuous speaking contexts which are more representative of typical speaking, and the relationships between acoustic measures.