week 3 (test 1) Flashcards
(31 cards)
paradigm
reflective of current theory and the entire worldview in which it exists
paradigm shift
change in basic assumptions within the ruling theory of science
anomalies
deviates from paradigm
scientific revolution
significant anomalies accrue and the discipline is thrown into a state of crisis
aristotle ideas about sleep
- sleep is a time of physical renewal
- the seat of consciousness is in the heart
- sleep is a result of warm vapors from stomach
galen ideas about sleep
- first to experimentally observe brain
- consciousness resided in brain, not heart
ideas before 20th century
- brain is only active during wakefulness
- sleep is a passive state
- sleep results from a lack of sensory stimulation
rene descartes ideas about sleep
- soul resides in pineal gland
- resting of animal spirits in pineal led to collapse of ventricles then sleep
luigi galvani ideas
- discovers electrical activity in nervous system
- aided in understanding transmission of signals
- led to measuring brain activity during sleep
richard caton ideas
- used a galvanometer to detect electrical waves on the surface of the scalp
- 50 years before eeg
wilhelm griesinger ideas
- documents eye movements at sleep onset
- eyes flutter during dreaming state
- proposed sleep as an active state
hans berger ideas
- developed eeg
- observed differences in sleep and waking brain activity
loomis, harvey, hobart ideas
- identify 5 stages
eugene aserinsky ideas
- w/ nathaniel kleitman and william dement documented eye movements using eeg
- coined REM sleep
krueger and obal ideas
- individual groups of neurons enter a state of sleep after a certain threshold of s;ee[ has been reached
5000-1000 bc insomnia treatments
- chanting, bloodletting, medicinal plants
1903 insomnia treatments
- first sleeping pill
- barbital on the market and popular with insomnia and anxiety
1970s insomnia treatment
- richard bootzin
- cognitive behavioral therapy for insomnia
forced desynchrony
- extreme day length
- exhibit endogenous free running rhythms
- allows for measurement of circadian period
adolescent phase delay
- observed bedtime delay
- consistent across continents
- initially attributed to increased homework, extracurricular activities
- delay in animals suggest biological basis
characteristics of light influencing phase
- timing
- intensity
- duration
- wavelength
- photic history
circadian phase markers
- melatonin
- core body temperature
- cortisol
dim light melatonin onset (dlmo)
- dim light conditions
- controlled posture
- melatonin measured in plasma or saliva
- defined as the clock time at which endogenous melatonin surpasses a predetermined threshold
response of the circadian clock that is dependent upon internal biological time
phase response curve
