[Role of electroencephalography in the diagnosis of acute cerebral diseases]. / Place de l'électroencéphalogramme dans le diagnostic des affections cérébrales aiguës.

It appears from a study of 100 cases of acute cerebral disease that electroencephalography is valuable as part of the diagnosis strategy and not only to establish the correct final diagnosis. This examination therefore plays a non-negligible role in neurological practice. In a number of diseases it provides information that no other examination can provide, being a dynamic, functional method of brain tissue analysis.

[Comparison of the EEG and computerized tomography findings in 500 patients hospitalized in the neurology clinic of the Salpêtrière]. / Comparaison des résultats de l'EEG et de la tomodensitométrie chez 500 malades hospitalisés à la clinique neurologique de la Salpêtrière.

A comparative EEG and CT scan Study of 500 inpatients was performed. Patients were divided into four groups: 82 patients (16.5%) had normal EEG and CT scan; 92 patients (18.5%) had normal EEG but abnormal CT scan; 75 patients (15%) had abnormal EEG and normal CT scan; 251 patients (50%) had both EEG and pathologic CT scan alterations. Among the 500 patients, 326 EEG (65%) and 343 CT scan (69%) were abnormal. In 167 cases (33%) only one examination was abnormal. This finding may be considered as indicative of the complementary role for both techniques. For each group, the main clinical features were underlined: objective neurologic syndrome, seizures, psychiatric conditions, subjective complaint and headache. In groups with a pathologic CT scan and pathologic EEG, a percentage of 74 showed a clear neurological nosology. In 41% of these patients, lateralisation and localisation were much easier, owing to the presence of a single lesion. This study emphasised that electroencephalography is useful in temporal pathologies and in determination of the epileptic frame, whereas CT scan is useful in subcortical lesions in fronto-parietal lesions.

[Electro-encephalographic study in 25 patients with Creutzfeldt-Jakob's disease (author's transl)]. / Etude électro-encéphalographique de vingt-cinq cas de maladie de Creutzfeldt-Jakob.

Standard EEG tracings were recorded in 25 patients with anatomically confirmed Creutzfeldt-Jakob's disease. A total of 82 recordings were studied, and were found to conform with those previously described. More particularly, the periodic paroxystic tracing described by Nevin in 1954 was observed in 16 cases, but these were of late onset, frequent, and non-specific. By adopting the anatomical classification described by Daniel (1972), the authors were able to obtain some evidence of electro-anatomical correlations in some cases, but confirmation by means of a larger series of patients is necessary.