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Spectral analysis of visual potentials evoked by sine wave modulated light in migraine


Electroencephalography & Clinical Neurophysiology 53(4): 436-442
Spectral analysis of visual potentials evoked by sine wave modulated light in migraine
Visual evoked potentials to unstructured sine wave-modulated light were measured in 30 common migraine patients and 23 controls. The fundamental and the 2nd harmonic components of the response were analyzed separately in the frequency domain by power spectrum estimation. Absolute and relative powers of the fundamental component were significantly larger in the patients at 16-22 Hz stimulation both initially in the onset phase, and later in the steady-state phase, whereas those of the 2nd harmonic component were smaller in the later stages of stimulation. Significant difference occurred in the dynamics of the 2nd harmonic response between patients and controls. No significant difference was observed at 10 Hz stimulation.

Accession: 006459474

PMID: 6175505

DOI: 10.1016/0013-4694(82)90008-6

Download PDF Full Text: Spectral analysis of visual potentials evoked by sine wave modulated light in migraine



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