Awareness of time during sleep.
One cognitive ability that has been demonstrated in many people when asleep is the capacity to keep track of time sufficiently so that they can self-awaken when desired. Possible practical, physiological and evolutionary sources of this skill are outlined. Such findings help to establish the likely presence of significant cognitive ability when asleep.
Moorcroft
W H
WH
Breitenstein
J L
JL
D001143:Arousal / Q000502:physiology; D001364:Awareness / Q000502:physiology*; D003071:Cognition / Q000502:physiology; D006801:Humans; D012890:Sleep / Q000502:physiology*; D012895:Sleep, REM / Q000502:physiology; D013998:Time Perception / Q000502:physiology*