[Brief overview of Franco-Iranian medical relations during the 19th and 20th centuries].

The continuation and the development of medical cultural relations between France and Iran are highly desirable in the interest of both of our countries. After twelve year interruption these relations should become fruitful again. We have attempted to outline several proposals which should enable us to reach this proposed aim.

[Atypical aspects of the electroencephalogram in subacute sclerosing panencephalitis].

Diffuse paroxysmal and periodic discharges in subacute sclerosing panencephalitis (SSPE), have a specific temporo-spatial character in about 90% of cases. A random selection of 100 among 358 cases was performed in this study and the following results were obtained. Twelve cases showed no initial diffuse paroxysmal and periodic discharges but an atypical pattern consisting in: 1) unilateral periodic activity (three cases); 2) bifrontal rhythmic delta activity (two cases); 3) epileptic discharges, one of which was absence (four cases); focal delta activity (one case); 5) normal EEG (two cases).

[Electroencephalographic study of 40 patients with subacute sclerosing panencephalitis].

Among viral diseases, subacute sclerosing panencephalitis is one of the most frequent in Iran (more than 300 cases in two neurological centers and for the last ten years). This paper is devoted to an electroencephalographic study of 40 patients: visual analysis of EEG rhythms (frequency, amplitude, lability, morphology), effects of activation methods, description of pathological EEG patterns (periodic paroxysmal complexes in 38 cases; slow or fast spikes, polyspikes and bifrontal or diffuse spikewaves in 9 cases; localized comitial abnormal patterns in 5 cases; bifrontal delta rhythm in 13 cases). From this description, we suggest an hypothesis of a diffuse localisation at the origin of periodic paroxysmal patterns: the periodic discharge of immune complexes from cerebral tissue into the cerebral circulation would constitute a synchronizing system which periodically modifies the blood-brain barrier permeability.

[The epileptic heredity in several comitial children].

For most authors, hereditary epilepsy is restricted to a certain number of neuropsychiatric diseases liable to be transmitted and associated to epileptic seizures : such as the progressive epilepsy myoclonia of Ramsay-Hunt, or some neuroectodermoses (Bourneville's tuberous sclerosis). But those diseases are quite rare compared to the majority of the epileptic population we meet everyday. Yet it seems to us that there is a genetic predisposition in some patients suffering from epilepsy, generalized from the start, called idiopathic epilepsy (grand mal, petit mal, massive myoclonias), where no cerebral lesion can be found.