Laryngeal reaction time profiles in spasmodic dysphonia: Relationship to cortical electrophysiologic abnormality

B. C. Watson, F. J. Freeman, K. D. Pool, T. Finitzo, S. B. Chapman, D. Mendelsohn, M. D. Devous, S. D. Schaefer, L. G. Close, G. V. Kondraske

Research output: Contribution to journalArticle

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Abstract

This study combines measures of linguistic and vocal performance and long-latency auditory electrophysiology to investigate task-dependent variability in spasmodic dysphonia (SD). Linguistic performance was evaluated using several measures of relatively complex linguistic ability (i.e., discourse analysis). Vocal performance was evaluated by measuring acoustic laryngeal reaction time (LRT) for tasks that differ in complexity. Normal structure of the cortex and subcortex was confirmed by magnetic resonance imaging. Cortical function was measured using multichannel quantitative auditory evoked potentials (AEPs). As a group, SD subjects who demonstrated subtle linguistic deficits also demonstrated prolonged LRT for the complex task and repeated and persistent auditory electrophysiologic abnormalities over the anterior quadrant of the left hemisphere. As a group, linguistically normal SD subjects demonstrated no significant increase in LRT for the complex task and no recurrent electrophysiologic abnormalities over the left anterior cortex relative to normal controls. Results support a neurogenic origin of SD and suggest that some aspects of inter- and intrasubject variability may be related to differences in loci and magnitude of cortical abnormalities.

Original languageEnglish (US)
Pages (from-to)269-278
Number of pages10
JournalJournal of Speech and Hearing Research
Volume34
Issue number2
StatePublished - 1991

Fingerprint

Dysphonia
Linguistics
Reaction Time
linguistics
performance
Auditory Evoked Potentials
Aptitude
Electrophysiology
Acoustics
discourse analysis
acoustics
deficit
Group
Magnetic Resonance Imaging
time
Hearing
Laryngeal
ability
Cortex

ASJC Scopus subject areas

  • Otorhinolaryngology

Cite this

Watson, B. C., Freeman, F. J., Pool, K. D., Finitzo, T., Chapman, S. B., Mendelsohn, D., ... Kondraske, G. V. (1991). Laryngeal reaction time profiles in spasmodic dysphonia: Relationship to cortical electrophysiologic abnormality. Journal of Speech and Hearing Research, 34(2), 269-278.

Laryngeal reaction time profiles in spasmodic dysphonia : Relationship to cortical electrophysiologic abnormality. / Watson, B. C.; Freeman, F. J.; Pool, K. D.; Finitzo, T.; Chapman, S. B.; Mendelsohn, D.; Devous, M. D.; Schaefer, S. D.; Close, L. G.; Kondraske, G. V.

In: Journal of Speech and Hearing Research, Vol. 34, No. 2, 1991, p. 269-278.

Research output: Contribution to journalArticle

Watson, BC, Freeman, FJ, Pool, KD, Finitzo, T, Chapman, SB, Mendelsohn, D, Devous, MD, Schaefer, SD, Close, LG & Kondraske, GV 1991, 'Laryngeal reaction time profiles in spasmodic dysphonia: Relationship to cortical electrophysiologic abnormality', Journal of Speech and Hearing Research, vol. 34, no. 2, pp. 269-278.
Watson, B. C. ; Freeman, F. J. ; Pool, K. D. ; Finitzo, T. ; Chapman, S. B. ; Mendelsohn, D. ; Devous, M. D. ; Schaefer, S. D. ; Close, L. G. ; Kondraske, G. V. / Laryngeal reaction time profiles in spasmodic dysphonia : Relationship to cortical electrophysiologic abnormality. In: Journal of Speech and Hearing Research. 1991 ; Vol. 34, No. 2. pp. 269-278.
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