SDL-Consciousness and sleep

Question 1

What is consciousness?

Answer 1

it is a state of awareness of the self and the

environment

Question 2

What are the three main states of unconsciousness?

Answer 2

Coma
Deep sleep
Unconscious mind

Question 3

What are the stages between consciousness and death?

Answer 3

Clouding-agitation with memory disturbance and disorientation
Drowsiness-Tendency to drift into sleep without sensory stimulation (slow actions, slurred speech
Coma-Reduced eye opening, verbal response and motor function

Question 4

What are the different types of illusions?

Answer 4

Completion Illusions – you fill in the missing
gaps
Affect illusions – these are dependent upon an
individual’s mood state
Pareidolic illusions – these illusions arise due
to excessive fantasy thinking

Question 5

What is the behavioural definition of sleep?

Answer 5

Recurrent regular reversible state characterised by quiescence and diminished responsiveness to external cues.

Question 6

In the neurophysical definition of sleep what are the measurements that are made?

Answer 6

EEG-electrical activity of the brain
eye movements
muscle tone

Question 7

What does a circadian rhythm mean?

Answer 7

Means a roughly 24 hour cycle that the body follows. Many tissues in mammals demonstrate circadian oscillations.

Question 8

What are the main causes of excessive sleepiness?

Answer 8

Sleep-wake dysregulation - narcolepsy
Circadian management - Shift work disorders
Sleep Disruption- Obstructive sleep apnoea, Depression, parasomnias

Question 9

What are parasomnias?

Answer 9

Sleep walking and nightmares

Presence of muscle tone with REM indicative of parasomnias

Question 10

What is Narcolepsy?

Answer 10

Fall asleep uncontrollably throughout the day for

periods between 1-30 mins