Ultradian Rhythms (AQA A-Level Psychology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
How long do ultradian rhythms last?
How long do ultradian rhythms last?
Less than 24 hours
Approximately how long does each complete sleep cycle last?
Approximately how long does each complete sleep cycle last?
90 minutes
How many full sleep cycles do most people experience during a normal night's sleep?
How many full sleep cycles do most people experience during a normal night's sleep?
Five cycles
What is released during Stage 4 of sleep?
What is released during Stage 4 of sleep?
Growth hormones
Which sleep stage shows more brain activity than any other stage?
Which sleep stage shows more brain activity than any other stage?
REM sleep
What occurs during Stage 2 of sleep on EEG outputs?
What occurs during Stage 2 of sleep on EEG outputs?
Sleep spindles
How many participants were in Dement & Kleitman's 1957 study?
How many participants were in Dement & Kleitman's 1957 study?
7 males and 2 females
What did Dement & Kleitman find about dream recall during REM sleep?
What did Dement & Kleitman find about dream recall during REM sleep?
High dream recall
What did Albers et al. find about SCN lesions in primates?
What did Albers et al. find about SCN lesions in primates?
Affected circadian not ultradian
How many genes did Van der Veen & Gerkema identify linked to ultradian rhythmic activity?
How many genes did Van der Veen & Gerkema identify linked to ultradian rhythmic activity?
60 genes