An electroencephalographic analysis of personality-dependent performance under psilocybin

An electroencephalographic analysis of personality-dependent psychomotor performance was investigated in 11 volunteers under 160 μg/kg psilocybin-induced ergotropic arousal. Significant psilocybin-induced changes in mean energy content of EEG, reaction time, and latency and duration of alpha attenuation to photic stimuli were noted in all subjects, as well as significant correlations between EEG parameters, personality types and psychomotor (handwriting) test results. Moreover, a ‘clustering’ of certain EEG, personality, and handwriting characteristics in specific subjects seems to justify their classification into two general groups.