Vergleich vernderter Bewutseinszustnde unter den Halluzinogenen (?)-?9-trans-Tetrahydrocannabinol (?9-THC) und N,N-Dimethyltryptamin (DMT)@@@Comparison of altered states of consciousness induced by the hallucinogens (?)-?9-trans-tetrahydrocannabinol (?9-THC) and N,N-Dimethyltryptamine (DMT)