circadian rhythms Flashcards
what did morgan find
hamsters who removed SCN lacked circadian rhythms
what did Folkhard find
when the clock was set to be faster, rhythms still ran to a 24 hour cycle
What did schochat find
after serotonin, participants had the highest sleep propesity
What did campbell and murphy find
regular light exposure changed rhythms
What did miles find
blind man needed sedatives to reset his rhythms
What did siffre find
had a 24.9 hour rhythm when underground
What did Luce and Segal find
People in the arctic still sleep for 7 hours, even when the light isn’t out
What is a practical application
melatonin can be a natural cure for let lag
whats a problem with using melatonin
It can be addictive and have side effects
what are biological rhythms
cyclical changes
what is a circadian rhythm
it runs to a 24 hour cycle
whats an example of a circadian rhythm
sleep wake cycle
what are endogenous pacemakers
internal/ innate features that regulate rhythms (scn)
what is entrainment
the idea that rhythms can also be regulated by zeitgebers
explain how it is both entrainment and endogenous features that make us sleep
low light enters the retina which sends a message to the SCN followed by the pineal gland which releases melatonin to inhibit brain mechanisms that promote wakefulness
