The study of performers reveals information important to trainers of potentially-outstanding singers and actors. Just as valuable, however, are discoveries for speech-language pathologists who treat patients seeking rehabilitation of abnormal voice conditions. The current investigation compares laryngeal muscle activity in the elderly with that of young subjects and explores the effectiveness of the Lee Silverman Voice Treatment method on elderly patients with voice problems not caused by Parkinson disease. Although NCVS investigators are thematically linked, they are geographically separate. Each institution provides unique resources, either in terms of equipment, personnel, expertise, or patient populations.
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