Hall Fisher

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In this study, the frequency of occurrence of speech and voice symptoms in 200 Parkinson patients was defined by two expert listeners from high-fidelity tape recordings of conversational speech samples and readings of the sentence version of the Fisher-Logemann Test of Articulation Competence. Specific phonemes that were misarticulated were catalogued.(More)
Consonant articulation patterns of 200 Parkinson patients were defined by two expert listeners from high fidelity tape recordings of the sentence version of the Fisher-Logemann Test of Articulation Competence (1971). Phonetic transcription and phonetic feature analysis were the methodologies used. Of the 200 patients, 90 (45%) exhibited some(More)
The purpose of this study was to increase current understanding of acoustic characteristics of women's voices with advancing age. Phonated and whispered [ae] vowel productions by 75 women at three age levels (25 to 35, 45 to 55, 70 to 80 years) were assessed on acoustic measures related to fundamental frequency stability and vocal tract resonance(More)
Acoustic, physiologic, and perceptual data on articulation of bilabial and alveolar stop consonants in CVC words spoken by a subject with a 20% glossectomy, 2/3-mandibulectomy and radical neck dissection, whose surgical closure was accomplished by suturing the tongue to the floor of the mouth and buccal mucosa are provided. Compensatory articulation(More)
Acoustic characteristics of two types of alaryngeal speech were quantified and compared to normal speech production. High-quality audio recordings were obtained from 15 subjects who had undergone the tracheoesophageal puncture method of postlaryngectomy vocal rehabilitation (Singer & Blom, 1980), 15 esophageal speakers, and 15 laryngeal talkers as they(More)
This paper proposes a theory of supply shocks, or shifts in the short-run Phillips curve, based on relative-price changes and frictions in nominal price adjustment. When price adjustment is costly, firms adjust to large shocks but not to small shocks, and so large shocks have disproportionate effects on the price level. Therefore, aggregate inflation(More)
The purpose of this investigation was to obtain information on the acoustic characteristics of women's voices as a function of perceived versus actual age. Tape recordings of whispered and normally phonated /ae/ vowels were obtained from 75 women in three age groups (25-35, 45-55, and 70-80 years). One-second segments of phonemically representative /ae/(More)
In a study of vocal tract and esophageal function during speech and swallowing, unmedicated Parkinson patients were found to have specific disorders in oral and esophageal stages of deglutition and a predictable sequence of deterioration in speech. To determine whether these disorders are exclusive to parkinsonism or are typical of all patients with tremor(More)
Examination of the speech mechanism (the vocal tract) frequently provides information about certain neurologic lesions. The speech, swallowing and respiratory patterns of patients with cerebellar, upper motor neuron, lower motor neuron and extra-pyramidal lesions (parkinsonism) were studied, 10 of each category. The patient's lingual, labial and velar(More)
  • Gia D Depillisj, Sean M Decaturj, Doug Barrick, Steven G Boxer 'st, L.-N Ji, M Liu +21 others
  • 2001
The amino acid ligands to the heme iron provide an important distinction between different classes of heme proteins. For example, the peroxidases and the oxygen carrier proteins myoglobin (Mb) and hemoglobin bear a proximal His, electron-transfer proteins such as cytochrome c have His, Met, and Lys ligands, and oxidases such as cytochrome P450 and catalase(More)