Presentation on theme: "Other Sleep Disorders AO2"— Presentation transcript:
1 Other Sleep Disorders AO2 Explanations of Sleep disorders:NarcolepsySleep Walking
2 Narcolepsy Refresher Psychological explanations REM HLA Hypocretin Lehrman and Weiss, 1943 – disguise sexual fantasiesREMCaused by malfunctions in the system regulating REM sleep, hence cataplexy, hallucinations etc.HLAHonda et el 1983 – increased HLA – mutation of immune system.HypocretinLow levels of this neurotransmitter which regulates emotion and homeostasis in the hypothalamus (Sakuri, 2007)
3 Somnambulism (Sleep-Walking) Incomplete arousalBrain activity shows delta waves (SWS) and beta waves (Awake) – brain is not fully arousedRisk factorsSleep deprivation, alcohol, fever, stress, psychiatric conditions (Plazzi et al, 2005)Hormonal changes at pubertySome people may have inherited vulnerability – diathesis stress modelWhy children?Children have more SWSSystem which normally inhibits motor activity not sufficiently developed (Oliviero, 2008)Psychological causesSleep 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 IDA2 x studies1 methodology1 x RWA
5 Narcolepsy Sleep-walking RWA – treatments being worked on involving artificial hypocretin replacementRWA – Jules Lowe used sleep walking research as defence in murder caseStudy 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 causeIDA – Psychological cause unlikely – refutes Psychodynamic approachMethodology – animals used in researchMethodology – 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?