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Other Sleep Disorders AO2 Explanations of Sleep disorders: Narcolepsy Sleep Walking.

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Presentation on theme: "Other Sleep Disorders AO2 Explanations of Sleep disorders: Narcolepsy Sleep Walking."— Presentation transcript:

1 Other Sleep Disorders AO2 Explanations of Sleep disorders: Narcolepsy Sleep Walking

2 Narcolepsy Refresher Psychological explanations ▫ Lehrman and Weiss, 1943 – disguise sexual fantasies REM ▫ Caused by malfunctions in the system regulating REM sleep, hence cataplexy, hallucinations etc. HLA ▫ Honda et el 1983 – increased HLA – mutation of immune system. Hypocretin ▫ Low levels of this neurotransmitter which regulates emotion and homeostasis in the hypothalamus (Sakuri, 2007)

3 Somnambulism (Sleep-Walking) Incomplete arousal ▫ Brain activity shows delta waves (SWS) and beta waves (Awake) – brain is not fully aroused Risk factors ▫ Sleep deprivation, alcohol, fever, stress, psychiatric conditions (Plazzi et al, 2005) ▫ Hormonal changes at puberty ▫ Some people may have inherited vulnerability – diathesis stress model Why children? ▫ Children have more SWS ▫ System which normally inhibits motor activity not sufficiently developed (Oliviero, 2008) Psychological causes ▫ Sleep walking result of acting out dreams representing repressed traumas and anxieties

4 From the hand out and your own knowledge… In pairs, you should work on either Sleep-walking or Narcolepsy (one each). When you are done, swap! Find: 1 x IDA 2 x studies 1 methodology 1 x RWA

5 NarcolepsySleep-walking RWA – treatments being worked on involving artificial hypocretin replacement RWA – Jules Lowe used sleep walking research as defence in murder case Study 1 – Vogel, (1960)/Siegel (1999)Study 1 – genetic link – Broughton (1968)/Lecendreux et al (2003) Study 2 – Migon et al (1997)Study 2 – Diathesis-stress model support – Zadra et al (2008) IDA – Biological approach supported by research into hypocretin as a cause IDA – Psychological cause unlikely – refutes Psychodynamic approach Methodology – animals used in research Methodology – lab experiments, problems with measuring sleep etc.

6 Implication check… Does it say what the information you have discussed in M and I suggests about the explanation for narcolepsy/sleep walking? Does it say how you know this? Does it make a justified judgement upon the value/usefulness of the explanation? Does it link back to the question?


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