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  • Title: Rheoencephalographic and electroencephalographic studies on flunarizine.
    Author: Tsikalova R, Nikolov R, Nikolova M.
    Journal: Methods Find Exp Clin Pharmacol; 1990 Oct; 12(8):527-30. PubMed ID: 2093131.
    Abstract:
    The effect of flunarizine on the rheoncephalogram (REG) and on spontaneous electroencephalographic activity (EEG) was studied in acute experiments in cats. The following REG parameters were assayed: amplitude, anacrotic section of the curve and its relative part, and dicrotic index. EEG spectra were derived from 10-sec samples of EEG and the relative amplitudes were estimated at 2 Hz-intervals from 0-40 Hz. The REG study showed that flunarizine (2.5 and 5 mg/kg i.v.) caused an increase of the amplitude and a decrease of the anacrote, of its relative part, and the dicrotic index, changes indicating a lowering of the cerebrovascular resistance. EEG study showed a decrease of the amplitudes of the alpha-frequency band, and an increase of the fast-waves amplitudes, most pronounced at 5 mg/kg, changes showing enhancement of the activation processes in the brain cortex.
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