This neurosurgeon, Michael Egnor, has wide experience of hundreds brain surgeries, of NDE and research into all kinds of brain activity. He shows that all manner of thought can be located in different parts of the brain but there is no location for abstract thought. 

  He makes the point that while the body is mortal and can die the soul is spirit and immortal and cannot die. He quotes Thomas Aquinas on the divine light of the soul.