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What is a biological rhythm?
cycles of behaviour that repeat over time and vary in length
What is a circadian rhythm?
Cycle that lasts around 24 hours and restarts every 24 hours
What is an example of Circadian rhythm?
Core body temperature- has a cyclical pattern that lasts around 24 hours It is at its lowest at about 4:30 am and highest around 6pm. A small drop in body temperature between 2pm and 4pm can explain why we get sleepy early afternoon
What is another example of a CIRCADIAN RHYTHM?
The sleep-wake cycle - main circadian rhythm
What is an ultra radian rhythm?
occur more than every 24 hours- cycle is shorter than 24 hours
Example of Ultra radian rhythm
Sleep cycle
What is the sleep cycle?
90 minute periods repeated around 5 times times a night
What are the two main phases of the sleep cycle?
NREM and REM
NREM is further divided into light and deep sleep
What is REM
rapid eye movement and it is the point where most of the dreams occur. Our skeletal muscles are paralysed but our brain is active.
What is infraradian rhythms
Cycles that repeat over time longer than a day
What is an example of infraradian cycle-women
menstrual cycle that lasts around 28 days the cycle is controlled by hormones
What is another example of Infraradian rhythm?
SAD - seasonal depression disorder
Mental illness where you suffer depressive symptoms over the winter months
Note 
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