[The effect of pregnancy on transcallosal evoked potentials]

Pregnancy induced an intrahemispheric redistribution of transcallosal flows mainly in the projection areas of the cat cortex. Functional interhemispheric asymmetry (FIA) of transcallosal evoked responses (TEPs) was determined by interhemispheric distribution of negative-positive responses in non-pregnant cats, whereas in pregnant ones it was determined by the asymmetry of positive-negative TEPs. The right hemisphere played the major part in the changes of the TEPs' amplitude parameters, and the left one--in temporal parameters.