The situation was uncomfortable for the people and for [Eutimio], so I ended the problem giving him a shot with a .32 pistol in the right side of the brain, with exit orifice in the right temporal [lobe]. He gasped for a little while and was dead. Upon proceeding to remove his belongings I couldn't get off the watch tied by a chain to his belt, and then he told me in a steady voice farther away than fear: "Yank it off, boy, what does it matter." I did so and his possessions were now mine.
So far from the posterior lobe, the posterior cornu, and the hippocampus minor, being structures peculiar to and characteristic of man, as they have been over and over again asserted to be, even after the publication of the clearest demonstration of the reverse, it is precisely these structures which are the most marked cerebral characters common to man with the apes. They are among the most distinctly Simian peculiarities which the human organism exhibits.thomas henry huxley
Fugue states or severe headaches prior to or after overt necrophilic behavior have also been reported. Coupled with the fact that alcohol (one of the factors associated with necrophilia) can induce temporal lobe abnormalities, and that temporal lobe abnormalities are associated with a number of other paraphilias , it may be reasonable to deduce that temporal lobe anomalies may be responsible for some instances of necrophilia.