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Voice therapy is often most effective for treating patients with vocal cord polyp, polypoid degeneration and singer's nodule. However, little is known about the total speaking times in 1 day, the ratio of speech per hour and the sound level during speech, in individual patients. If these parameters can be readily detected, it could be clarified as to how(More)
Spastic dysphonia is a disorder of phonation which is characterized by a strained, creaking, and choked vocal attack, a tense and squeezed voice sound. Spastic dysphonia in a functional voice disorder can be classified into two types from the viewpoint of activities of the extrinsic and intrinsic laryngeal muscle groups. A functional voice disorder(More)
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