Sleep & Sleep Disorders
Terms in this set (34)
Any significant loss of sleep, resulting in problems in concentration and irritability. In severe cases, hallucinations can occur.
The mind's subjective experience of the world; awareness of our surroundings.
A cycle of bodily rhythm that occurs over a 24-hour period.
Small area of the brain important in homeostasis and the sleep/wake cycle.
Abbreviation for the suprachiasmatic nucleus, an area of the hypothalamus essential for sleep.
Hormone released in the early evening that makes people start to feel sleepy.
Brief sleep lasting only a few seconds; can happen mid-conversation or when driving.
Theory proposing that sleep is necessary to the physical health of the body and serves to replenish chemicals and repair cellular damage.
Psychological process that is consolidated during sleep.
The sleep stage which shows increased amounts after periods of sleep deprivation.
The stage of sleep in which the eyes move rapidly under the eyelids. Also called paradoxical sleep.
A general term for sleep stages 1-4.
Large, regular brain waves shown on the EEG during sleep stage 3-4.
A dream's apparent topic or superficial meaning.
A dream's true underlying meaning, according to Freud/psychoanalytic approach.
Biological explanation/hypothesis of dreams, stating that dreams are produced when the brain attempts to make sense of activations that occur randomly during sleep.
Theory of Crick & Mitchison (1983) stating that sleep helps the brain to forget unwanted ('parasitic') information.
Disorder - difficulty in falling asleep or staying asleep, characterized by less than 85% sleep efficiency and >30mins lying awake.
Sleep disorder where a person stops breathing for brief periods while asleep.
When the person arises and walks around during sleep (technical name for sleep walking).
Sudden sleep attacks occur in the middle of waking activities.
The experience of waking up unable to move.
Abrupt awakenings with panic and emotional arousal, more common in children under age 7.
The need for a larger dose of a sleeping pill to achieve same effect.
Drugs that reduce activity of the CNS.
Drugs that stimulate the CNS, e.g. caffeine and amphetamines.
A type of cognitive therapy that is commonly used to treat insomnia.
Factor affecting sleep - tension caused by worries that makes it hard to fall asleep.
Factor affecting sleep - this interferes with circadian rhythms, and links with excessive screen use and shift work.
Machine which is used to treat sleep apnea - provides "continuous positive airway pressure" via a mask.
Research study which looked at the dreams of a young boy, concluding that they were influenced by his unconscious wishes and fears.
Dement & Kleitman (1959)
Research study which demonstrated that dreams occur primarily in REM sleep.
Czeisler et al (1990)
Research study that studied shift workers, finding that their circadian rhythms adjusted much more quickly when using bright light therapy.
Name of an American celebrity who stayed awake for over 8 days, experiencing hallucinations and an inability to focus on simple tasks.