Reference : Habituation of evoked responses is greater in patients with familial hemiplegic migra...
Scientific journals : Article
Social & behavioral sciences, psychology : Neurosciences & behavior
Human health sciences : Neurology
http://hdl.handle.net/2268/72244
Habituation of evoked responses is greater in patients with familial hemiplegic migraine than in controls: a contrast with the common forms of migraine.
English
Hansen, Jacob Moller [> >]
Bolla, Monica [> > > >]
Magis, Delphine mailto [Centre Hospitalier Universitaire de Liège - CHU > > Neurologie CHR >]
De Pasqua, Victor [Centre Hospitalier Universitaire de Liège - CHU > > Neurologie CHR >]
Ashina, Messoud [> > > >]
Thomsen, L. L. [> > > >]
Olesen, Jens [> > > >]
Schoenen, Jean mailto [Centre Hospitalier Universitaire de Liège - CHU > > Neurologie CHR >]
2011
European Journal of Neurology
Blackwell Science
Yes (verified by ORBi)
International
1351-5101
1468-1331
Oxford
United Kingdom
[en] Background: Familial hemiplegic migraine (FHM) is a rare, dominantly inherited subtype of migraine with transient hemiplegia during the aura phase. Mutations in at least three different genes can produce the FHM phenotype. The mutated FHM genes code for ion transport proteins that animal and cellular studies have associated with disturbed ion homeostasis, altered cellular excitability, neurotransmitter release, and decreased threshold for cortical spreading depression. The common forms of migraine are characterized interictally by a habituation deficit of cortical and subcortical evoked responses that has been attributed to neuronal dysexcitability. FHM and the common forms of migraine are thought to belong to a spectrum of migraine phenotypes with similar pathophysiology, and we therefore examined whether an abnormal habituation pattern would also be found in FHM patients. Methods: In a group of genotyped FHM patients (five FHM-1, four FHM-2), we measured habituation of visual evoked potentials (VEP), auditory evoked potentials including intensity dependence (IDAP), the nociception-specific blink reflex (nsBR) and compared the results to a group of healthy volunteers (HV). Results: FHM patients had a more pronounced habituation during VEP (P = 0.025) and nsBR recordings (P = 0.023) than HV. There was no difference for IDAP, but the slope tended to be steeper in FHM. Conclusion: Contrary to the common forms of migraine, FHM patients are not characterized by a deficient, but rather by an increased habituation in cortical/brain stem evoked activities. These results suggest differences between FHM and the common forms of migraine, as far as central neuronal processing is concerned.
Researchers ; Professionals
http://hdl.handle.net/2268/72244
also: http://hdl.handle.net/2268/88208
10.1111/j.1468-1331.2010.03190.x

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