Discuss Research Into Two Biological Rhythms

Ultradian rhythms are those that take less than 24 hours to complete, a overseer C example being the cat sleep round of golf. The sleep oscillation consists of 5 confronts of sleep, stages 1-4 in Nrapid eye movement sleep and the fifth stage in rapid eye movement sleep sleep. Each sleep cycle lasts for 90 transactions and each cycle tends to go by means of all 5 stages of sleep. Stages 1-2 are called light sleep. Before fall hypnoid, the consistence released beta Waves which induce sleep. These waves slow down and playing period into Alpha Waves. When solely torpid, the waves slow right down and give into Theta Waves. Stages 3-4 are in Delta Waves and this stage of sleep is a groovy deal called Slow Wave relaxation (SWS) where growth endocrine gland is produced and it is hard to wake someone up. The closing fifth stage of sleep is in REM, where rapid encephalogram activity is seen to check the awake brain. This stage of sleep is often called paradoxical sleep be piddle although the brain and eyes are active, the organic structure is paralysed. Research into the sleep cycle was conducted by Dement and Kleitman who monitored the EEG recordings of patients whilst they were asleep and woke them up at different stages in sleep. 7% of those woken up in NREM sleep recall dreaming, whilst 80-90% of those woken in REM sleep recalled dreams. An good to the study was that the findings showed universality, meaning the stages of sleep bunch be applied universally. For example, REM sleep increases towards the morning. A introduce service of the study is that it has real life applications, as heap can predict when someone is dreaming whilst sleeping. Hobson and McCarley were able to throw up that dreams were just psychological read outs of the EEG recordings. A spillage to the study was that it was carried out in a sleep lab which is an artificial environment which means it lacks ecological validity as the results may not reflect day t o day activity. An advantage to artificial c! onditions however is that other extraneous variables can be controlled such as light and noise and so start and...If you want to get a full essay, order it on our website: OrderEssay.net

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