For the purposes of this article, “cognitive impairment” means a substantial disorder of thought, mood, perception, orientation, or memory that grossly impairs judgement, behavior, or the ability to live independently or provide self-care, and includes but is not limited to:
(1) Alzheimer’s disease or other related dementias;
(2) An intellectual or developmental disability;
(3) A brain injury; or
(4) Another mental disability not related to substance abuse.