Abstract
Using the wavelet transform of the electroencephalographic (EEG) fragments we have examined for the first time the photic driving reaction for patients with disruptions of the functional state of the central nervous system arising by cerebrovascular disturbances of various intensity degrees. Background fragments of EEG of patients in the vegetovascular dystonia group are characterized by the smaller values of the wavelet spectrum energy in the α range than the fragments in the control group. Patients in the groups of vertebrobasilar insufficiency and arteriosclerotic damage of cerebral blood vessels have much less energy values in δ range. The wavelet analysis of reactive patterns has demonstrated the different photic driving for β, θ and α ranges for the patients of various groups. The study demonstrates the possibility of the wavelet analysis to estimate quantitatively the human brain lability to percept light stimuli. The results can be applied for appropriate choice of treatment of a patient having cerebrovascular disturbances.
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