1. SLEEP

2. The awareness of our sensations, perceptions & thoughts.
SLEEP
CONSCIOUSNESS
The awareness of our sensations, perceptions & thoughts.

3. WHY DO WE SLEEP?

4. We sleep to … Replenish Chemicals-repair and restoration
Growth-growth hormone is released by pituitary gland in sleep

5. WHAT ARE THE MAJOR EFFECTS OF SLEEP DEPRIVATION?

6. SLEEP DEPRIVATION EFFECTS INCLUDE …
Fatigue
Diminished immunity to disease
Irritability
Inattention
Hand tremors etc…
Example-New York disc jockey, Peter Tripp, stayed awake for 200 hrs to raise money for a charity. He experienced visual illusions & could not do simple arithmetic.

7. STAGES OF SLEEP Stages 1-4
(Note: even more stages recognized today)
Stage 1-light sleep-brain waves similar to being awake
Stage 4-Very difficult to awake at this stage
We proceed through 4 stages approximately every 90 min

8. REM SLEEP ‘Rapid Eye Movement’ Occurs during Stage 1
Can determine if subject is dreaming by their eye movements
If REM sleep is interrupted subject becomes short tempered & less able to concentrate