How Much of the Brain Must Die in Brain Death?
Bernat, James L.
Journal of Clinical Ethics. 1992 Spring; 3(1): 21-26.
This article will argue three theses: (1) the phenomenon known colloquially as "brain death" is the explicit formulation of society's traditional implicit concept of death; (2) the best criterion of death, although admittedly an approximation, is the permanent cessation of functioning of the whole brain; and (3) future changes in techology will not change the definition of death but will slightly alter the criterion of death by permitting us to refine further the precise quantity and location of brain-cell destruction that is necessary and sufficient for death.