Verbal communication disorders in psychogenic dysphonia
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Psychogenic dysphonia is defined as disturbances in voice and speech quality with emotional background with lack of organic changes in the larynx. Mental condition has significant impact on the process of producing voice, functioning of respiratoryphonatory- articulation mechanism and speech prosody. The aim of the study was visual, acoustic, perceptual assessment as well as self-assessment of voice and speech quality using subjective and objective methods in patients with psychogenic dysphonia. The study included 50 patients with psychogenic dysphonia diagnosed in the Department of Clinical Fonoaudiology and Logopedics, Medical University of Białystok and treated at the Foniatric Outpatient Clinic, University Hospital in Białystok in 2017–2018. The control group consisted of 30 subjects with euphonic voice. All patients underwent subjective and objective assessment of voice and speech quality. The GRBAS scale, breathing pathway assessment, respiratory-phonatory-articulation analysis, voice and speech intensity evaluation have been performed. Speech prosody has also been examined. Patient selfassessment of voice has been conducted using Voice Handicap Index (VHI). Objective evaluation of larynx included vibrations of vocal folds visualization using High Speed Digital Imaging (HSDI). Acoustic analysis of voice quality has been performed using DiagNova Technologies. The maximum phonation time (MPT) has been determined. Hyperfunctional dysphonia is the most common clinical form of psychogenic dysphonia. Abnormal breathing pathway influence the reduction of MPT and disturbance of respiratory-phonatory-articulation coordination in patients with psychogenic dysphonia. In psychogenic dysphonia intonation and speech rate disorders are observed. Results of voice self-assessment in the majority of examined patients indicates a mild voice disability.
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