[Specificity of electroencephalographic correlations of asthenic disorders in atypical juvenile asthenic-depressive conditions].

Amplitude-interval factor analysis was made to study the EEG in young patients with atypical ++sub-depressive states (n-15) and depressive states (n-43) defined in the literature as "asthenic juvenile deficiency". It has been discovered that patients suffering from sluggish schizophrenia with prominent asthenic disorders differ from healthy test subjects, patients suffering from cyclothymia and those suffering from sluggish schizophrenia without well-defined asthenic symptomatology in significantly higher values of EEG factor related to the index, regularity and frequency of low-amplitude beta-activity as well as in the reduced values of the other EEG factor connected with the mean period of alpha-waves and with the theta-index. Based on the psychophysiological testing of structurally similar EEG factors, carried out earlier on healthy test subjects, the data obtained may be treated as reflection of the neurodynamic unbalance common to asthenic disorders in sluggish schizophrenia, which lies in abundance processes of cortical excitation and deficit of inhibitory processes of the active selective character. The intensity of depressive symptomatology correlated with relative deceleration of alpha-activity.