[Possibility of EEG-diagnosis of heterozygotic Martin-Bell syndrome]

A case of fragile-X syndrome (the Martin-Bell syndrome) in two male half-sibs from different marriages of their mother was described. Both patients suffered from mental retardation and had some characters of the Martin-Bell syndrome. Somatically healthy mother was characterized by IQ-101. The EEG study showed similar changes both in mother and her sons. The diagnostic specificity of the method presented was discussed.