Vogel, M. & von Cramon, D. (1982). Dysphonia after traumatic midbrain damage: A follow-up study. Folia Phoniatrica, 34,150-159.
Type of
Study
Research study 
Subjects 6 males, 2 females; ages 12-29; 
Diagnoses Severe TBI with traumatic midbrain syndrome
Speech
Condition
Traumatic mutism
Purpose To document the recovery of phonation following traumatic mutism and to identify patterns in the recovery of normal laryngeal function.
To establish characteristics of dysphonia following traumatic mutism.
Methods Phoniatric exam-Evaluation of sensory and motor functions of the laryngeal and pharyngeal musculature, laryngoscopic exam, and magnifying laryngoscopic exam to exclude lesions
Aphasia exam-Short form of the Token Test
Phonetic exam-Every 3 weeks the following were assessed: articulators, articulatory testing with words, phonatory skills, pitch range, and glottal onset
Two phoneticians rated the recordings to assess changes in phonation and pathological vocal behavior.
Results Onset of voiced phonation was high in pitch then decreased.
The subject's normal pitch returned before normal loudness.
Volitional nonspeech laryngeal function returned with normal voice functions.
Duration of expiration extended to the normal length.
There was a reduction or disappearance of breathiness.
Strained voice was present with raising and lowering pitch which disappeared in some and in others it remained.
Treatment
Implications
n/a
 
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