The aim of this study was the investigation of amplitude and habituation of contingent negative variation (CNV) in migraine and chronic daily headache (CDH) patients in order to describe possible neurophysiological features responsible for the clinical transformation and worsening of the headache. Fifteen females suffering from migraine without aura and 15 females diagnosed with CDH evolved from migraine without aura with interparoxysmal chronic tension-type headache (transformed migraine), underwent CNV recording. Fifteen healthy females matched for age served as controls. CNV was obtained from C3 and C4 using the standard reaction time paradigm and 3 sec ISI. The amplitudes and habituation of total CNV, early and late components, and of post-imperative negative variation (PINV) were calculated. The migraine patients were characterized by significantly more pronounced negativity of the early component and total CNV, compared to CDH sufferers and controls. CDH patients demonstrated significantly reduced negativity of the late component and pronounced PINV compared to the other groups. The early component of CNV did not habituate in migraine or CDH patients. However, the impaired habituation in CDH was related to significantly lower amplitudes. These results support the diagnostic and scientific value of habituation in migraine research and therapy. Late components of CNV and PINV can be considered as predictive variables for transformation of migraine. The results are discussed in terms of the relationship between late CNV, PINV, environment control abilities and susceptibility for development of depression.

Results were obtained using a new method, based on the "Adeli-92" therapeutic space suit, for the rehabilitation of patients with movement disorders due to acute lesions of the cerebral circulation, head trauma, and other causes. A variety of methods was used to assess the state of patients before and after treatment, including clinical studies, psychological tests, EEG recordings, evoked potential studies, stabilography, and heart rhythm analysis. The results obtained demonstrate the high efficacy of this new method.

Middle cerebral artery flow pulsatility and basilar artery velocity are higher in patients with right-sided migraine compared with left-sided migraineurs, during the headache-free period. Although these parameters were similar to controls, the differences found during the headache-free period in migraineurs may indicate vascular involvement predisposing to the unilateral headache recurrence.

Flunarizine and cinnarizine (IC50 6.8x10(-6) and 2.8x10(-5) M, respectively) inhibited 3H-serotonin uptake by platelets. In higher doses, they blocked serotonin-induced platelet aggregation and stimulated 3H-serotonin release from these cells. Imipramine did not affect serotonin-releasing effects of preparations. In all patients cinnarizine was more potent in inhibiting serotonin uptake, and in half of the patients cinnarizine displayed higher activity as an inductor of serotonin release.

The effects of aspirin on the contingent negative variation (CNV) of 16 healthy, right-handed volunteers were studied in accordance with a placebo-controlled double-blind crossover design. Early and late CNV factors were measured. Aspirin caused a statistically significant decrease of the early wave and an increase of mean amplitude of the late wave. A central action of aspirin, affecting noradrenergic and dopaminergic structures, may be responsible for the CNV changes.