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Conducting a Comprehensive Voice Assessment in Parkinson’s Disease - page 14 / 22

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Assessing  Pitch

1)  Identify Optimal/Best pitch Range

        Range at which most pleasing quality is heard without    

          physical effort or excessive expenditure of energy  

                                                                            (Brindle, 2005)

             Use: yawn-sigh        - uh, huh   (most relaxed phonation)

2) Identify Habitual Pitch

        Most typically used; should be appropriate for age and

          gender          

                 Males – Higher pitch males; lower in  females  

                 Some studies found the reverse

CAUSE

     Limited pitch range and variability and/or tremor in PD

      caused by reduced tensing of folds or “bowing”

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