A Drsková | PubMed Health

PubMed1989

[Vascular headache. Changes in visual evoked potentials].

The authors examined visual evoked potentials using the method of the visual full field stimulation hemi-field, using a check-board patterned structural stimulus in 69 patients with the diagnosis of vascular headache. The peak latencies of the waves did not differ significantly in the group of patients with vascular cephalea, as compared with the control group; this applies to both ways of stimulation. The es amplitudes of waves (P1 = P100 and N2) were significantly higher in the group with vascular cephalea after stimulation by the visual field. Of half the visual field stimulation did not reveal statistically significant differences in the latencies waves. The results may indicate an increased electrophysiological activity of the visual system in the interparoxysmal period in patients with vascular cephalea.

Adult↗

PubMed1989

[Vascular headache: circulatory, hemorrheologic, electrophysiologic and psychological aspects].

The aim of the work was to analyze circulatory, rheological, electrophysiological and psychological characteristics of patients with vascular headache, mostly migraine and vasomotor cephalea. The group was formed by 69 patients, mean age 40.4 +/- 9.0 years. It was revealed that: 1. there were no significant changes in rheological properties of blood in the following six parameters: coagulation, viscosity of plasma and blood, platelzo aggregation, of circulating aggregates, 2. there were no significant changes in rCBF (FF,SF,AF and ISI) parameters in the group of patients with bilateral headache but a rising rCBF in unilateral headache, 3. there was a significant reduction of the "peak frequency" in supratrochlear arteries and a significant increase of the flow rate in the intracerebral arteries (a.cerebralis media, a.cerebralis anterior), 42.4% of the patients displayed abnormal but non-specific EEg changes, 5. there was a significant increase of the amplitude of P1 and N2 waves of visual evoked potentials and a non-significant shortening of the latency of wave N1, 6. significant changes were recorded in some psychological parameters, in particular an increase of the score of depressivity, anxiety and neuroticism.

Adult↗