PCP and ketamine rarely induce schizophrenialike hallucinations in normal volunteers, but they exacerbate these disturbances in those who already have schizophrenia.

• PCP或K他命很少在正常受试者身上引发精神分裂式的幻觉，但在已经患有精神分裂的人身上，则会使得情形恶化。