Abstract:
Using the calculation of coefficients of multiple linear regression and two-dimensional
correlation, we studied the mutual influence (functional connectivity) between the amplitudes
of EEG rhythms within one lead in mentally retarded persons. Multiple regression equations
were geometrically interpreted using polycyclic multigraphs. As a result of the studies and
calculations, it was revealed that with mental retardation, the number of regression
coefficients is determined more than in the norm. In the control group of sinistrals, more
regression coefficients were detected between the amplitudes of EEG rhythms within one lead
than in dextrals. Apparently, the results obtained reflect the features of the network semantictopological brain. A greater number of regression coefficients within the full lead in dextrals,
under normal conditions, was expressed in the sinister hemisphere, and sinistrals in the
dextral one. In mentally retarded persons, on the contrary, during the reign, a greater number
of regression coefficients appeared in the dextral hemisphere, and in sinistrals (although not
significantly) in the sinistral. It can also be assumed that the connections-relationships found
in the leads reflect projections in these leads of the EEG rhythm generators. The foregoing
makes it possible to consider the regression connections-relations calculated in the analysis of
the relationship between the amplitudes of EEG rhythms as units of neurophysiological
activity.
