Is coma morally equivalent to anencephalia?

In this article I contend that the tendency to equate coma with anencephalia is a mistake. A key idea here is that there is a type of "mental-state" predicate that is applicable to the comatose but not to anencephalics. One of the moral implications of this is that the concept of "brain death," its alleged popularity notwithstanding, is badly confused. Also, because anencephalics have no mental life, there are few moral grounds for hesitating to use anencephalics as organ donors.