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14 Cards in this Set
- Front
- Back
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What are morning types?
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those who have an earlier than normal circadian rhythm leading to more alert in morning.
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What are evening types?
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those with later than normal circ rhythm leading them to be more alert and productive in the evening.
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When is the max CBT and min CBT for evening types?
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Min CBT could be 8-9am and Max could be8-9pm.
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What is the controversy over evening and morning types?
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that it might be a lifestyle choice rather than an endogenous circ rhythm. ie maybe personlaity types like introversion/extroversion play a part.
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What was the constant routine used to check out evening and morning types?
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kept in a supine position acorss 24hrs monitoring sleep propensity and CBT.
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What did the constant routine find?
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that there was a difference in the CBT of each group. CBT of morning type was 4am, of evening types was 6am. Max CBT morning types was 5pm, max evening types was 9pm.
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What did the study NOT establish?
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whether the ryhtm was endogenous or not. Just that there was a difference.
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What did the study find out about differences in subjective sleepiness in each group?
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that subjective sleepiness was at its highest at the lowest CBT.
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What was the main take home message of this study then?
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that subjective sleepiness is the main influence of behaviour on evening and morning types. Morning types get up early b/c they feel more alert and this entrains them to follow a certain pattern. Still does not answer which comes first - the circ rythm or the behaviour.
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What difference was found between morning and evening types Tmax time?
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about a four hour diff. Morning types - around 5pm, evening types around 9pm.
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What is sleep propensity?
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the amount of sleep gained in a sleep trial.
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what isthe biggest difference between morning and evening types?
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subjective sleepiness
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What is the smallest difference between morning and evening types?
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biological rhythms and lifestyle choices
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So what is driving the behaviour of evening and morning types?
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subjective sleepiness and alertness.
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