Genetic dependence of the electroencephalogram bispectrum.

The resting electroencephalogram of monozygotic twins and genetically unrelated controls was analyzed with the ordinary spectrum and with the bispectrum. Both the ordinary spectrum which measures linear EEG wave activity and the bispectrum which detects non-linear and correlated frequency activity had evidence for a genetic basis. It is suggested that there is a genetic basis for the process of EEG generation.