Salaeva Z M, Gasanov Ia K, Magalov Sh I
Zh Nevropatol Psikhiatr Im S S Korsakova. 1975;75(6):836-9.
The authors analyze in EEG changes seen in 14 patients with Friedreich's ataxia and in 7 patients with Pierre Marie ataxia. In all cases there was a changed bioelectrical brain activity, more expressed in Friedreich's disease. These changes were in the forma of alpha- and beta-activity, in irregular sharp waves or groups of slow fluctuations in the theta- and delta-waves. These changes are not strictly specific for these disorders. In Pierre Marie's disease there was a certain correlation between the duration of the disease and expressiveness of EEG changes. In both disorders the expressiveness of the changes were significantly influenced by the degree of brain stem lesions.
