Document Detail

Evaluation of brainstem function in patients with spasmodic dysphonia using vestibular evoked myogenic potentials and auditory brainstem responses.
MedLine Citation:
PMID:  17851921     Owner:  NLM     Status:  MEDLINE    
CONCLUSION: The vestibular area is closer than the auditory region to nucleus ambiguus. If a 'shared' lesion involves regions of adjacent nuclei of the brainstem in patients with spasmodic dysphonia then vestibular area involvement is more possible than that of the auditory region. OBJECTIVES: The authors hypothesize that lower brainstem lesions and involvement of descending pathways of the spinal tract may be the site of lesion in patients with spasmodic dysphonia. PATIENTS AND METHODS: Ten patients with spasmodic dysphonia were tested using the auditory brainstem response (ABR) and vestibular evoked myogenic potentials (VEMPs). RESULTS: No ABR abnormalities were found in right ears. Results of ABR on the left ear showed that one patient had abnormal ABR. This patient had severe sensorineural hearing loss on the left side. VEMPs displayed normal response in two patients bilaterally. First positive (p13) and second negative (n23) waves of VEMP could not be recorded in three cases unilaterally and in five patients bilaterally.
Amir Arvin Sazgar; Kamyar Akrami; Shahram Akrmi; Jalal Mehdizadeh; Azar Fezi
Publication Detail:
Type:  In Vitro; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Acta oto-laryngologica     Volume:  128     ISSN:  0001-6489     ISO Abbreviation:  Acta Otolaryngol.     Publication Date:  2008 Feb 
Date Detail:
Created Date:  2008-07-24     Completed Date:  2008-08-19     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370354     Medline TA:  Acta Otolaryngol     Country:  Norway    
Other Details:
Languages:  eng     Pagination:  177-80     Citation Subset:  IM    
Department of Otolaryngology, Head and Neck Surgery, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
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MeSH Terms
Acoustic Stimulation
Brain Stem / physiopathology*
Evoked Potentials, Auditory, Brain Stem / physiology*
Evoked Potentials, Motor / physiology*
Functional Laterality / physiology
Head Movements / physiology
Hearing Loss, Sensorineural / physiopathology
Middle Aged
Neck Muscles / innervation*
Neural Pathways / physiopathology
Reaction Time / physiology
Signal Processing, Computer-Assisted*
Spinal Cord / physiopathology
Vestibular Function Tests*
Voice Disorders / physiopathology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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