Chapter 7: Flashcards
what is Sleep deprivation
Sleep deprivation is a general term used to describe a state caused by inadequate quantity or quality of sleep, either voluntarily or involuntarily.
whats partial sleep deprivation
involves having less sleep (either quantity or quality) than what is normally required.
whats total sleep deprivation
involves not having any sleep at all over a short-term or long-term period. The person stays awake for one or more days or weeks.
what is affective functioning and how its affected by sleep
Partial/total sleep deprivation can interfere with
emotional regulation and reactivity (there is a strong link between inadequate sleep and our ability to control our emotions)
Compromise the brain’s ability to process emotional information
Harder to judge others’ emotions
Lower threshold for acting aggressively
Reduced ability to control impulses
what is behavioural functioning and how its affected by sleep
One of the immediate effects on behavioural functioning can be sleep inertia
Symptoms
Fatigue
Excessive sleepiness
Slower reaction times
Microsleeps
Risk-taking behaviours
what is sleep inertia
A temporary period of reduced alertness and performance impairment that occurs immediately after awakening. This is a sleep-to-wake transition effect that can follow a poor night’s sleep, especially if abruptly awoken. Makes an individual feel groggy, partly awake and disoriented as they transition toward full alertness. Sleep inertia is strongest at wake time, but dissipates, or decays, rapidly thereafter.
what is cognitive functioning and how its affected by sleep
Sleep deprivation may impair cognitive functioning
Reduced alertness
Difficulty to stay on task
Ability to maintain sustained attention reduces
Ability to divide attention reduces
Increase in number of errors
Loose situational awareness / miss detail
Reduction in creativity
sleep deprivation compared to BAC
17 hours of full sleep deprivation had decreased to a level that was equivalent to that of a person with a blood-alcohol concentration (BAC) of 0.05%
24 hours was equivalent to BAC of 0.1%
what are three circadian rhythm disorders
Delayed sleep phase syndrome (DSPS)
Advanced sleep phase disorder (ASPD)
Shift work disorder
what is a circadian rhythm sleep disorders
A group of sleep disorders involving a sleep disturbance that is primarily due to a mismatch between an individual’s sleep-wake pattern and the pattern that is desired or required.
what is shift work disorder
Circadian sleep disorder that occurs as a result of work shifts being regularly scheduled during the usual sleep period. Requiring adjustment of sleep / wake times.
Insomnia when trying to go to sleep
Excessive sleepiness when at work
what is bright light therapy
Involves timed exposure of the eyes to intense (but safe) amounts of light.
Aim is to shift a sleep-wake schedule to a desired time
Light may be sunlight or artificial. Artificial usually more common as it can be delivered at the right intensity for the required time
Light Box
Self administered
15 minutes – 2hrs
Detected by the SCN influencing
melatonin secretion
what is delayed sleep phase syndrome (DSPS)
causes people to feel sleepier much later at night than is desired and experience later sleep onset. As a result, their waking time also shifts to later in the morning. This sleep pattern can interfere with their schedule of activities for the day.
what is advanced sleep phase disorder (ASPS)
This causes people to feel sleepier much earlier at night than is normal, resulting in symptoms of sleepiness much earlier than desired, an early sleep onset and an awakening that is earlier than desired.
what is sleep hygiene
Involves practices that tend to improve and maintain good sleep and full daytime alertness. This includes behaviours and environmental factors that can be adjusted to help with a good night’s sleep and waking feeling rested and ready to take on the day’s activities.
