Cameron sat each subject in the center of their room and had them point to familiar objects… Some objects were behind the subjects and some to either side. He made notes on where they pointed. He then blindfolded the subjects (sheer genius) and every 15 minutes for an hour, he asked them to point to the location of the items in the room.
Thirteen out of the sixteen subjects progressively displaced all of the objects rostrally. Of interest, when the blindfolds were removed, the subjects were not distressed by where they thought things were in the dark and where they actually were. Cameron hypothesized that the nocturnal delirium represents the conflict experienced between where a person thinks an object is in the dark and where it actually is.
My sundowning observations on the airplane made me realize that we all sundown — it’s just that most of us can compensate for it.