explanations for sleep walking
- Created by: Jessica
- Created on: 13-01-13 14:29
View mindmap
- Explanations of sleep walking
- Incomplete arousal - seems to occurs when someone is in deep sleep (SWS) is awakened but the arousal of the brain is incomplete. (Beta waves occur which are associated with an awake state.
- Risk factors - some things appear to increase the likelihood on sleep walking occuring -- sleep deprivation, alcohol, stress, hormonal changes during puberty. It doesnt trigger it in all people though suggesting some individuals may have an inherited vulnerability.
- Children -Children have more SWS than adults, this could be why it is more common in children.
- Another posibility is that the part of the brain which inhibits motor sctivity in SWS is not succesfully developed in some children (and adults).
- Research evidence for a genetic basis - Broughton found that the prevelence of sleep walking in 1st degree relatives of an effected subject is atleast 10x greater that in the general population.
- Diathesis-stress model -- propeses that genes provide a vulnerability for a disorder bit the disorder will only occur in situations of environmental 'stress'.
- Resarch support - Zadra -- studied 40 pateints who had been referred to the sleep lab. They were prevented from sleeping. On the first night 50% showed signs of SW. Which rose to 90% on the second night. Sleep deprivation does not cause SW in normal individuals so this shows that SD acted as a 'stressor' for indivinduals whith a vulnerability
- IDA
- Nature v Nurture
- Jules Lowe - killed father in sleep RWA
Comments
No comments have yet been made