Stress and Sleep Disorders Flashcards
What are the four different stages of sleep?
- NREM (non rapid eye movement)
- NREM stage 2
- NREM stage 3
- REM sleep (rapid eye movement)
How many sleep cycles do we experience in one night?
6 cycles of 90 minutes
What happens in NREM stage 1?
occurs when you first fall asleep, last 10 minutes, accounts for 5% of total sleep time, easy to wake up, alpha waves to theta waves
What happens in NREM stage 2?
takes the most time and hard to wake up from, last 30-60 minutes, accounts for 50% sleep, delta waves
What happens in NREM stage 3?
deep sleep stage, hardest stage to wake up from, last 20-30 minutes, but decreases per cycle.
What happens in REM?
dreams happen here, max rem happens at the 6th cycle. heart rate, breathing and blood pressure fluctuate, most muscles are paralyzed.
What is the sleep theory of ontogenesis?
REM sleep allows for the developement of brain through preventing apoptosis in developing brain
Sleep disorders are divided into 3 categories what are they?
- dyssomnias
- parasomnias
- sleep disorders associated with mental neurologic
What is dyssomnias?
disorders that produce either difficulty initiating or maintaining sleep
What are the three groups of disorders associated with dyssomnias?
- intrinsic sleep disorders
- extrinsic sleep disorders
- circadian rhythm sleep disorders
What is parasomnias?
disorders that intrude into the sleep process and are not primairly disorders of sleep and wake states
What sections is divided into 3 subgroup?
- arousal disorders
- sleep-wake transition disorders
- parasomnias usually associated with REM sleep
What is insomnia?
develops due to somatized tension and learned sleep-preventing associations.
What is bruxism?
grinding and clenching of teeth while sleeping
What is sleep enuresis?
bed-wetting, must be persistent after the age of 5
What is the bidirectional relationship?
when you are stressed, you dont sleep, when you dont sleep, you are stressed and it carries on
What is the effect sleep has on HPA axis?
the less sleep you get, the less cortisol youll get. This will affect the cortisol axis and system . Stressful daytime events affect sleep
What did the Lauer and Lund study show?
anticipation of stress affects you more negatively than stress you experience in the day
What did the lange study show?
that high work strain causes poor sleep quality
What did the Rauer study show?
if sleep partner provokes anxiety, then sleep will be worse
What did the Hopper study prove in terms of Bruxisms?
daily stress and nocturnal bruxism was tested, anticipated stress was significantly related to bruxism
What does personality have to do with sleep problems?
high neuroticism is linked with poor coping with stress, poor sleep, more daytime sensitivity to poor sleep
What is the interaction between anxiety and confidence?
anxiety predicted bad sleep and confidence predicted better sleep
relationship between N and C and sleep was mediated by daily hassles, high N, low C individuals with bad sleep reported more social and academic problems
What is rumination?
continuously thinking about problems that have occured.
What is the hypothesis of rumination and sleep and the results?
high-trait ruminators condition would report poor sleep quality; no difference, high trait ruminators in rumination condition reported more sleep distrubances
