Sleep Deprivation

Question 1

Sleep deprivation
definition
symptoms

Answer 1

going without or not getting sufficient amounts of sleep

includes symptoms such as confusion, disorientation, delusions & hallucinations

Question 2

REM rebound

Answer 2

the process whereby an individual experiences extra amounts of REM sleep after being deprived of it

Question 3

Micro sleep
definition
Especially prevalent when people who are sleep deprived complete ??????? tasks

Answer 3

• a short period of sleep, where the individual appears to be awake
• especially prevalent when people who are sleep deprived complete monotonous tasks

Question 4

Is it necessary to replace lost sleep
how long does it take to reverse the effects of sleep deprivation
do you need to replace the full amount?

Answer 4

• It is not necessary to completely replace lost sleep.
• Most symptoms of sleep deprivation are reversed by a single nights sleep
• People who have been sleep deprived may report sleeping for a longer period of time that normal in the few nights following deprivation, but there is generally no need to replace the total amount of sleep that has been lost.

Question 5

What is more affected by sleep deprivation: Simple or complex tasks

Answer 5

Simple tasks are more affected by sleep deprivation than complex tasks

Question 6

Selective sleep deprivation
How and where is it studied
Effects

Answer 6

includes study of the effects of particular type of sleep i.e. NREM or REM
studied in a sleep laboratory by working with participants each time they drift into NREM or REM depending on which is being studied

loss of NREM reduces the bodies ability to restore the body and replenish energy stores
loss of REM leads to
-more aggression
-loss of concentration
-high levels of anxiety
-feelings of insecurity
-poor learning and consolidation of memory
-an inability to regulate body temperature

Question 7

Partial sleep deprivation

Effects

Answer 7

the effects of partial sleep deprivation depend on the individual, the amount of sleep lost and the period of time that sleep deprivation occurs
research has shown that with prolonged partial sleep deprivation people show a decline in ability to perform cognitive tasks, have slower reaction times, tend to think irrationally & illogically and have difficultly solving problems that require creative thinking. Memory processes may be impaired, processing information in short term memory (STM) may be significantly impaired.

Psychological Effects Physiological Effects
irritable trembling hands
aggressive drooping eye lids
anxious staring
lacking emotional control inability to focus the eyes
exhausted increased pain sensitivity
groggy headaches
paranoid general discomfort
unproductive muscle strength and endurance is reduced
mood ability to perform fine motor skills is impaired
frontal lobe functioning immune system weakened
memory appetite increase= weight gain & obesity
reaction time
ability to pay attention pituitary gland at base of brain releases growth hormone when you sleep, therefore lack of sleep (particularly NREM) may cause physical growth processes to be interrupted
decision making while driving a bike, riding bike less sleep= less glucose metabolised, therefore muscle strength and endurance is reduced

Question 8

Total sleep deprivation

effects

Answer 8

the effects of TSD vary with the individual and research indicates that prolonged TSD had no lasting long term effects (either psychological or physiological) after an uninterrupted sleep
Effects of TSD after 5+ days:
Psychological= heart rate & respitory system tend to be slower
body temperature drops
impaired functioning of the immune system
Physiological= hallucinations
depression
delusions
paranoia