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APS » Journals » Phys. Rev. Lett. » Volume 93 » Issue 3
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Phys. Rev. Lett. 93, 038103 (2004) [4 pages]

Steady-State Visual Evoked Potentials and Phase Synchronization in Migraine Patients

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L. Angelini1,2,3, M. De Tommaso1,4, M. Guido1, K. Hu5, P. Ch. Ivanov5,6, D. Marinazzo1, G. Nardulli1,2,3, L. Nitti1,7,3, M. Pellicoro1,2,3, C. Pierro1, and S. Stramaglia1,2,3
1TIRES: Center of Innovative Technologies for Signal Detection and Processing, University of Bari, Italy
2Physics Department, University of Bari, Italy
3Istituto Nazionale di Fisica Nucleare, Sezione di Bari, Italy
4Department of Neurological and Psychiatric Sciences, University of Bari, Italy
5Center for Polymer Studies and Department of Physics, Boston University, Boston, Massachusetts, USA
6Institute of Solid State Physics, Bulgarian Academy of Sciences, 1784 Sofia, Bulgaria
7D.E.T.O., University of Bari, Italy

Received 8 October 2003; revised 5 April 2004; published 15 July 2004

We investigate phase synchronization in EEG recordings from migraine patients. We use the analytic signal technique, based on the Hilbert transform, and find that migraine brains are characterized by enhanced alpha band phase synchronization in the presence of visual stimuli. Our findings show that migraine patients have an overactive regulatory mechanism that renders them more sensitive to external stimuli.

© 2004 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.038103
DOI:
10.1103/PhysRevLett.93.038103
PACS:
87.19.La, 05.45.Xt, 05.45.Tp, 42.66.Lc
 
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