| Orbicularis oculi and orbicularis oris reflexes in blepharospasm and torticollis spasmodica during spasm-free intervals. | |
| | |
MedLine Citation:
|
PMID: 11528155 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
To investigate possible abnormalities of the blink reflex pathways, we analyzed the latencies and amplitudes of the blink reflex responses in the orbicularis oculi (Ooculi) muscle, following supraorbital nerve stimulation, in 19 patients with blepharospasm, 16 patients with torticollis spasmodica and 22 control subjects. Furthermore, in order to examine the suprasegmental control of the responses, the reflex responses were also evoked in the orbicularis oris (Ooris) muscle after stimulation of the ipsilateral supraorbital nerve. The responses were recorded only when subjects had no contractions of the eyelid muscles, either involuntarily, voluntarily or spontaneously; this could be controlled by a sound signal. The metrics of the reflex responses in the Ooculi and Ooris muscles in patient groups were comparable to those in controls. Our data indicate that the afferent and efferent pathways of the reflex arc and the suprasegmental control of the reflex are intact in patients with blepharospasm and torticollis spasmodica, at least during spasm-free intervals. Alterations of responses may occur during spasms due to either segmental or suprasegmental changes. |
| | |
Authors:
|
J L Eekhof; M Aramideh; J D Speelman; B W Ongerboer de Visser |
Related Documents
:
|
1884185 - The hyperekplexias and their relationship to the normal startle reflex. 3597275 - Inhibition of skeletal muscle activity by lung expansion in the dog. 22818425 - Paralytic congenital talipes equinovarus of unknown origin: a new entity. multicenter s... 7200215 - Afferent limb of the human jaw reflex: electrophysiologic and anatomic study. 7598225 - The development of compensatory hypertrophy in the plantaris muscle of the rat. 22729455 - The effect of load uncertainty on anticipatory muscle activity in catching. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: European neurology Volume: 46 ISSN: 0014-3022 ISO Abbreviation: Eur. Neurol. Publication Date: 2001 |
Date Detail:
|
Created Date: 2001-08-30 Completed Date: 2001-12-04 Revised Date: 2006-11-15 |
Medline Journal Info:
|
Nlm Unique ID: 0150760 Medline TA: Eur Neurol Country: Switzerland |
Other Details:
|
Languages: eng Pagination: 75-8 Citation Subset: IM |
Copyright Information:
|
Copyright 2001 S. Karger AG, Basel |
Affiliation:
|
Department of Neurology, Academic Medical Centre, Meibergdreef 9, NL-1105 AZ Amsterdam, The Netherlands. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adult Aged Aged, 80 and over Blepharospasm / physiopathology* Blinking / physiology* Electric Stimulation Electromyography Facial Nerve / physiopathology Female Functional Laterality / physiology Humans Male Middle Aged Motor Neurons / physiology Neural Pathways / physiopathology Orbit / innervation Pons / physiopathology Reaction Time / physiology* Reference Values Synaptic Transmission / physiology Torticollis / physiopathology* Trigeminal Nucleus, Spinal / physiopathology |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Hypertension and neurovascular compression of the left lateral medulla oblongata in ischemic stroke.
Next Document: Mycophenolate mofetil in the therapy of severe myasthenia gravis.