Construct
Concept requiring a belief in something that cannot be seen or touched but that seems to exist
Consciouness
The organism awareness of, or possibility of knowing what happening inside or outside itself
Subconscious
just below our present awareness
Unconscious
no direct knowledge
biological clocks
internal chemicals units that control regular cycle in parts of the body.
Free-Running cycles
cycles set up by biological clocks that are under their own control
Entrainment
?
Circadian Rhythm
Sequence of behavioral changes that occurs every 24 hours