I should also mention the widely-studied case of Henry Gustav Molaison, as well as other cases of retrograde amnesia. Can you find any cases in which this condition was caused by the loss of a limb, a kidney, or anything other than bits of the brain?
This brings up a very interesting thought. This comment, you'll note, occurs in the comment box of a thread related to the permissibility of abortion. Earlier in the comments, Damion has been arguing for the justification of abortion partly based on what turns out is his evidence-free assumption (one more in a long line of such in modern science and modern "science") that very young babies don't have memories, and they don't have memories because they don't have functioning brains yet.
Therefore, it is permissible to put them to death.
One can only wonder whether Damion would argue for the permissibility of putting Molaison to death for the same reason. Does he have any good reason not to?