 These current criteria are subject to criticism, even if we put aside reservations concerning the qualifier ‘irreversible’. Animalists might resist the criteria since the vital activities of human beings whose entire brains have ceased to function can be sustained artificially using cardiopulmonary assistance. Mindists and personists might also resist the criteria, on the grounds that minds and all psychological features can be destroyed in human beings whose brain stems are intact. For example, cerebral death can leave its victim with an intact brain stem, yet mindless and devoid of self-awareness. (For more on criteria for death, see the article on the Definition of Death.)