Presentation on theme: "Other Sleep Disorders AO2"— Presentation transcript:
1Other Sleep Disorders AO2 Explanations of Sleep disorders:NarcolepsySleep Walking
2Narcolepsy 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)
3Somnambulism (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
4From 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
5Narcolepsy 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.
6Implication 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?