open access

Vol 47, No 4 (2013)
ARTYKUŁ ORYGINALNY
Submitted: 2012-05-21
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Variability of the blink reflex in patients with migraine

Anna Zduńska, Joanna Cegielska, Jan Kochanowski
DOI: 10.5114/ninp.2013.36759
·
Neurol Neurochir Pol 2013;47(4):352-356.

open access

Vol 47, No 4 (2013)
ARTYKUŁ ORYGINALNY
Submitted: 2012-05-21

Abstract

Background and purpose

Sensitization of brainstem trigeminal nuclei and activation of the trigeminovascular system are thought to play an important role in migraine. The blink reflex has become a valuable tool for investigating trigeminal nerve function. The aim of the study was to assess the differences in electrophysiological examinations of the trigeminal nerve (blink reflex) in a group of patients with migraine in comparison with a healthy control group.

Material and methods

The examination was conducted among 58 patients. Patients were diagnosed in the Polyclinic or hospitalized in the Department of Neurology of Warsaw Medical University in Bielański Hospital. The study group included 29 patients suffering from migraine (diagnosed according to the International Classification of Headache Disorders, 2nd edition) and 29 patients without headaches served as controls. All patients underwent neurological examination and magnetic resonance imaging to identify organic disorders. The blink reflex was tested among all patients in accordance with electrophysiological laboratory standards.

Results

The latency of the R1 response was significantly shorter among patients with migraine. The latency of R2 and R2’ responses was similar in patients and controls. A significant inverse correlation was observed between latency of R2 and R2’ responses and frequency of migraine attacks.

Conclusions

The inverse correlation between the frequency of attacks and the latency of R2 and R2’ responses of the blink reflex confirms the abnormal eaxcitability induced by the high frequency of migraine attacks.

Abstract

Background and purpose

Sensitization of brainstem trigeminal nuclei and activation of the trigeminovascular system are thought to play an important role in migraine. The blink reflex has become a valuable tool for investigating trigeminal nerve function. The aim of the study was to assess the differences in electrophysiological examinations of the trigeminal nerve (blink reflex) in a group of patients with migraine in comparison with a healthy control group.

Material and methods

The examination was conducted among 58 patients. Patients were diagnosed in the Polyclinic or hospitalized in the Department of Neurology of Warsaw Medical University in Bielański Hospital. The study group included 29 patients suffering from migraine (diagnosed according to the International Classification of Headache Disorders, 2nd edition) and 29 patients without headaches served as controls. All patients underwent neurological examination and magnetic resonance imaging to identify organic disorders. The blink reflex was tested among all patients in accordance with electrophysiological laboratory standards.

Results

The latency of the R1 response was significantly shorter among patients with migraine. The latency of R2 and R2’ responses was similar in patients and controls. A significant inverse correlation was observed between latency of R2 and R2’ responses and frequency of migraine attacks.

Conclusions

The inverse correlation between the frequency of attacks and the latency of R2 and R2’ responses of the blink reflex confirms the abnormal eaxcitability induced by the high frequency of migraine attacks.

Get Citation

Keywords

blink reflex, migraine, electrophysiological tests

About this article
Title

Variability of the blink reflex in patients with migraine

Journal

Neurologia i Neurochirurgia Polska

Issue

Vol 47, No 4 (2013)

Pages

352-356

DOI

10.5114/ninp.2013.36759

Bibliographic record

Neurol Neurochir Pol 2013;47(4):352-356.

Keywords

blink reflex
migraine
electrophysiological tests

Authors

Anna Zduńska
Joanna Cegielska
Jan Kochanowski

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