_:vb50937701 . _:vb50937701 . _:vb50937701 . _:vb50937701 "A focal dystonia that involves the muscles that control the vocal cords, resulting in strained or breathy speech."^^ . _:vb50937701 "url:http://www.nidcd.nih.gov/health/voice/pages/spasdysp.aspx"^^ . _:vb50937701 . _:vb50937701 .