Zombie Girl

Davis' claim has been criticized, particularly the suggestion that Haitian witch doctors can keep “zombies” in a state of pharmacologically induced trance for many years. Symptoms of TTX poisoning range from numbness and nausea to paralysis (particularly of the muscles of the diaphragm), unconsciousness, and death, but do not include a stiffened gait or a death-like trance. According to psychologist Terence Hines, the scientific community dismisses tetrodotoxin as the cause of this state, and Davis' assessment of the nature of the reports of Haitian zombies is viewed as overly credulous.
Scottish psychiatrist R. D. Laing highlighted the link between social and cultural expectations and compulsion, in the context of schizophrenia and other mental illness, suggesting that schizogenesis may account for some of the psychological aspects of zombification.