Reflection of disorders in the choice process reaction in cortical evoked activity of oligophrenic patients
Vazhnova, T.N.
Zhurnal Nevropatologii i Psikhiatrii Imeni S.S. Korsakova 80(12): 1817-1821
1980
ISSN/ISBN: 0044-4588 PMID: 7223204 Document Number: 165666
Evoked cortical potentials (the late positive component P 300) were registered in situations of differentiating visual stimula and deciding on selecting motor reactions in oligophrenic patients (12 cases) and normals (17 cases). The patients demonstrated disturbances in the process of selecting the reaction, which may be expressed in evoked cortical electrical activity: the amplitude of the component P 300 in the vertex to a stimula, related to selecting reactions, is not increased. An assumption is made that oligophrenic patients show no focal cortical activation in the anterior cortical areas in situations, requiring selection of motor reactions.