Document Detail


Blink reflex in patients with postparalytic facial syndrome and blepharospasm: Trigeminal and auditory stimulation.
MedLine Citation:
PMID:  22854209     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
OBJECTIVE: The enhancement of blink reflex (BR) excitability was shown in patients with postparalytic facial syndrome (PFS) and essential blepharospasm (EB). We prospectively investigated patients with PFS and EB whether BR alterations demonstrated by trigeminal stimulation will similarly be observed upon auditory stimulation. METHODS: Fifteen patients with PFS, 15 patients with EB, and 30 healthy volunteers were involved. Electrically stimulated trigeminal BR and auditory BR were studied bilaterally. RESULTS: The mean R2 amplitude and duration values were highest in EB patients, being significantly higher than PFS patients (p<0.05) and control group (p<0.01). The mean R2 duration in PFS patients were also significantly longer in compared to control group (p=0.025). EB patients showed a higher mean R (auditory) amplitude and duration than PFS patients (p<0.05) and controls (p<0.04). The mean R (auditory) duration was longer on symptomatic side of PFS patients in compared to controls (p=0.05). CONCLUSIONS: We observed that there is an enhanced excitability of BR circuit in postparalytic facial syndrome and essential blepharospasm, which could be evoked by auditory stimulation in addition to trigeminal stimulation. SIGNIFICANCE: The enhanced excitability in patients with EB and PFS probably originates from the final common pathway of BR circuit, namely facial motor or premotor neurons.
Authors:
M A Akalin; M E Kiziltan; G Benbir
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-30
Journal Detail:
Title:  Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology     Volume:  -     ISSN:  1872-8952     ISO Abbreviation:  Clin Neurophysiol     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-8-2     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100883319     Medline TA:  Clin Neurophysiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 International Federation of Clinical Neurophysiology. Published by Elsevier Ireland Ltd. All rights reserved.
Affiliation:
Istanbul University Cerrahpasa Faculty of Medicine, Department of Neurology, Istanbul 34098, Turkey.
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