biological approach to sleep, dreams, and disorders

biological approach to sleep, dreams, and disorders

1. Hypothalamas contains the supper chrasmatic nuclus which controls are sleep cycle

2. Chemicals control us for example melatonin makes us happy and helps us sleep or serotonin that has various funtions like mood regulation, appetite, digetion, sleep, memory

3. Amygala controls are emotions fears etc

4. Adenosine an importint part of making energy through ATP builds up throughout the day and sleep has been found to help get rid of this extra adenosine

5. Activation synthesis hypothesis Honson and McCarvey 1977

   • this theory suggests that dreaming is just the brain attemting to understand the neural activity that takes place while sleeping

6. Dement and Klentanal 1957 REM sleep

7. Dreams are a larger result from random brain activity during sleep and therefore are meaningless

8. Zeisler et al 1990 study of night shift workers

9. Osuqld 1966 evolutionary advantage

   • Sleep allows brain to carry out essentall repair tasks

10. Oswald restoration theory 1966

    • sleep has many positive affects such as: repairing minor injuries, removal of waste chemicals such as lactic acid, adenosine and many more which are recycled, replenishing neurotransmitters
      • theory supported by the high proportain of REM sleep seen in new born babies which sleep 50/60% of the time

11. sleep is better after periods of stress and improves mood

12. sleep is universal amonst complex animals

13. Strenghs.

    • One of the main evolutionally explanations why all manmels sleep, growing evidence to support that sleep is important to the brain,gives good evidence why people with brain injery or drug withdrawl tend to spend more time in REM during their recovery

14. weaknessess.

    • oversimplistic to suggest that sleep is just about restoration and sleep deprivation studies have failed to provide conclusive evdidence that sleep is neccessary to keep the body funtioning Horne 1988