Ketamine produces sedation, immobility, amnesia, and marked analgesia. At low doses and upon emergence from anesthesia, ketamine produces changes in mood, body image, and hallucination. Relative to PCP, ketamine is less potent as an anesthetic, has a faster onset, and shorter duration of action.
https://www.deadiversion.usdoj.gov/drug_chem_info/ketamine.pdf