Shared Flashcard Set

Details

Other Sleep Disorders
Narcolepsy and Sleep-walking (somnambulism)
15
Psychology
12th Grade
01/08/2013

Additional Psychology Flashcards

 


 

Cards

Term

 

 

 

Briefly describe what Narcolepsy and Sleep-walking are?

Definition

 

Narcolepsy = sudden, uncontrollable attacks of sleep at unexpected times.

 

 

Sleep-walking = Person is partly awake and partly asleep but no conscious knowledge of own activity.

Term

 

 

 

What are the 3 explanations of Narcolepsy?

Definition

 

REM

 

HLA

 

Hypocretin

Term

 

 

 

How might REM sleep cause Narcolepsy?

 

(5 points)

Definition

1/ Classic symptom of narcolespy is loss of muscle tone (cataplexy).

2/ This is similar to what happens during REM sleep.

3/ Intrusions of REM type sleep in the day (hallucinations).

4/ Abnormal REM sleep at night.

5/ Therefore narcolepsy is caused by a malfunction in the system regulating REM sleep.

Term

 

 

 

How might HLA cause Narcolepsy?

 

(2 points)

Definition

 

1/ Narcolepsy linked to a mutation in the immune system.

 

2/ HLA molecules found on white blood cells surfaces co-ordinate the immune system response.

Term

 

 

 

How might Hypocretin cause Narcolepsy?

 

(3 points)

Definition

1/ Narcolepsy linked to a neurotransmitter.

 

2/ Hypocretin neurotransmitters regulate sleep through interaction with the systems which regulate emotion/homeostasis in the brain.

 

3/ In Narcoleptics, hypocretin levels are low.

Term

 

 

 

Name 2 Psychologists supporting explanations of 

Narcolepsy?

 

(Initials: V, N)

Definition

 

Vogel

 

 

Nishino et al.

Term

 

 

 

Why does Vogel support explanations of Narcolepsy?

Definition

 

 

Observed REM sleep at onset of sleep in narcoleptic patients, rather than later in the cycle which is the norm.

Term

 

 

 

Why does Nishino et al. support explanations of Narcolepsy?

Definition

 

 

Found lower levels of Hypocretins in cerebrospinal fluids of narcoleptics.

Term

 

 

 

What are the 3 main explanations/points relating to

Sleep-walking?

 

 

Definition

 

Incomplete Arousal

 

Risk Factors

 

Why Children?

Term

 

 

 

Describe Incomplete Arousal in relation to Sleep-Walking?

Definition

 

Person is partly awake (engaging in normal waking activities) but also asleep (SWS deep sleep) and not easily awoken.

 

Display delta waves typical of SWS as well as beta waves typical of an awake person.

Term

 

 

 

Describe 5 risk factors for Sleep-walkers?

Definition

Sleep deprivation

 

Alcohol

 

Fever

 

Stress disorders

 

Hormonal changes during puberty

Term

 

 

 

Why is sleep-walking more common in children?

Definition

 

 

Children have more SWS than adults and also their SWS systems may be under developed.

Term

 

 

 

Name a Psychologist supporting explanations of

Sleep-walking and a model?

 

(Initials: B, DSM)

Definition

 

Broughton

 

 

Diathesis stress model

Term

 

 

 

Why does Broughton support explanations for Sleep-walking?

Definition

 

 

Found that those whose relatives also experience

sleep-walking, are 10x more likely to also experience it.

Term

 

 

 

Outline the Diathesis Stress Model?

Definition

 

Proposes that genes provide a vulnerability for the disorder but the disorder will only occur in situations of environmental stress. Explains why children tend to more commonly experience sleep-walking as their higher levels of SWS act as the vulnerability.

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