The mainstream rationale for equating brain death (BD) with death is that the brain confers integrative unity upon the body, transforming it from a mere collection of organs and tissues to an organism as a whole. In support of this conclusion, the impressive list of the brains myriad integrative functions is often cited. Upon closer examination, and after operational definition of terms, however, one discovers that most integrative functions of the brain are actually not somatically integrating, and, conversely, most integrative (...) functions of the body are not brain-mediated. With respect to organism-level vitality, the brains role is more modulatory than constitutive, enhancing the quality and survival potential of a presupposedly living organism. Integrative unity of a complex organism is an inherently nonlocalizable, holistic feature involving the mutual interaction among all the parts, not a top-down coordination imposed by one part upon a passive multiplicity of other parts. Loss of somatic integrative unity is not a physiologically tenable rationale for equating BD with death of the organism as a whole. (shrink)

D. Alan Shewmon has advanced a well-documented challenge to the widely accepted total brain death criterion for death of the human being. We show that Shewmon's argument against this criterion is unsound, though he does refute the standard argument for that criterion. We advance a distinct argument for the total brain death criterion and answer likely objections. Since human beings are rational animals – sentient organisms of a specific type – the loss of the radical capacity for sentience involves a (...) substantial change, the passing away of the human organism. In human beings total brain death involves the complete loss of the radical capacity for sentience, and so in human beings total brain death is death. (shrink)

The diagnosis of death by neurological criteria (colloquially known as ‘brain death’) is accepted in some form in law and medical practice throughout the world, and has been endorsed in principle by the Catholic Church. However, the rationale for this acceptance has been challenged by the accumulation of evidence of integrated vital activity in bodies diagnosed dead by neurological criteria. This paper sets out 10 different Catholic responses to the current crisis of confidence and assesses them in relation to a (...) Catholic understanding of philosophical anthropology. Having considered each of these responses, none is found to provide good grounds for the moral certainty about death needed for current transplant practice to be ethically acceptable. Unless adequate grounds for the use of neurological criteria can be restored, current transplantation practice will have become what Pope John Paul II called a ‘furtive, but no less serious and real, form of euthanasia’. (shrink)