1. Sleep Deprivation
By: Anjana Kokar

2. What is Sleep Deprivation?
A sleep disorder characterized by having too little sleep, can be chronic or acute. Long –
term sleep deprivation (lasts four days or longer) is quite uncomfortable.
Effects:
-Health ; in form of physical & mental impairment, impairs our ability to think, handle stress,
maintain a healthy immune system and moderate emotions.
•Depression
•Heart Disease
•Hypertension
•Irritability
•Slower reaction times
•Slurred speech
•Tremors
•Weight Change (Fatigue)
Sleep deprivation can be a fatal at times to and can cause death
Why we Sleep?
One main function of sleep is to provide a time-out period ; body can eliminate waste
products from muscles and repair cells, strengthen immune system, recover physical
abilities lost during day.
Without sleep our bodies react abnormally.

3. Rapid Eye Movement (REM)
What is REM? Sleep periods characterized by quick eye movements, loss of
muscle tone, and dreaming. The REM periods last from a few minutes to as long as
an hour, averaging about 20 mins in length.
Brief History :
•Breakthrough occurred in the laboratory; by Nathaniel Kleitman.
•He had given one of his grad students, Eugene Aserinsky, a task of finding out
whether the slow, rolling eye movements that characterize the onset of sleep
continue throughout the night.
•They did rapidly
•William Dement were then able to correlate the REM of sleepers with changes
in brain-wave patterns.
•When you first climb into bed, close your eyes and relax, your brain bursts of
alpha waves.
•Gradually, these waves slow down further, and you drift into the land of nod,
passing through 4 stages, each one deeper then the other.

4. Stage 1. Small waves and irregular, and you
feel yourself drifting on the edge of
consciousness (light sleep).
Stage 2. Your brain emits occasional short
bursts of rapid, high – peaking waves called
sleep spindles. Minor noise won’t disturb.
Stage 3. Your brain occasionally emits delta
waves, very slow waves with high peaks.
Your breathing and pulse slows down, your
muscles relaxed, hard to wake up.
Stage 4. Delta waves have now largely
taken over, and you in deep sleep. Takes
vigorous shaking or loud noise to awaken
you. (Phrase when people talk in their
sleep.)
Sequence takes about 30 – 45 mins. Then
you move back up the ladder from stage 4-
1. 70-90 mins past.
REM. Rapid irregular waves. Your heart
rate increases, your blood pressure rises
and breathing becomes faster. You enter
the realm of REM. Also known as
“paradoxical sleep”, and usually when you
are dreaming.

5. Psychology Period 7 Sleep Log
7.3953
8.6046
6.173
7.92 7.8306
6.723
8.7
7.6167.4 7.113
6.382
7.4
6.4626
7.61
6.7793
0
1
2
3
4
5
6
7
8
9
10
Hours
Days
Average Hours Slept Per Day ; Period 7 Psych Class
Key; Weekends (Friday, Saturday, Sunday)
Most Sleep on Weekend
Medium Sleep on Weekend
Least Sleep on Weekend
This graph shows the average
amount of sleep each students
received over the 35 days.

6. Naps
0
0.5
1
1.5
2
2.5
3
3.5
4
Sarah Anjana Jen Taylor
Burke
Taylor B Ariel Mia Jocelyn Shirina Nina Ann Tara Mallory Sophie
Hours
Students Names
Average Hours Naps for Each Student
This graph shows the average
hours each person in the class gets
of naps each day.

7. Sleep Dept Calculation
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Monday - Thursday Friday - Sunday
MinusHours
Days
Sleep Dept Total Average for Weekends vs. Weekdays
http://www.thewhitenoisealbum.com/sleepdebtcalculator.needed.html
Calculated sleep debt in the Psychology period 7 class.
We should be having about 9 hours of sleep each night.
On weekdays it’s shown that we are much more sleep deprived compared to
on the average amount sleep received on the weekend; our sleep debt is
lower.