Two of your posts this week got me thinking about states of the mind.
Ululate: Did you know that in Filipino, the word for insane is "ulul"? Though I haven't done any investigation as to the etymology of this native word, I have a feeling it could have something to do with howling like mad.
My other thought was brought about by your "Thought for the Day" from William Dement: Now I know where the term "dementia" came from. Thanks, AWAD!