1.5 Sleep Flashcards
Consciousness
our awareness of ourselves and our environment.
Spontaneously - day dreaming, drowsniness, dreaming
Physiologically - hallucinations, orgasm, food/oxygen starvation
Psychologically - sensory deprivation, hypnosis, meditation
circadium rhythm
refers to the body’s natural 24-hour cycle, roughly matched to the day/night cycle of light and dark.
jet lag/shift work
Excessive tiredness
NREM 1,2,3
1,2,3,2,REM
REM sleep
Heart rate goes up and breathing becomes rapid, sleep paralysis occurs when brainstem blocks motor cortex’s messages and muscles dont move.
REM rebound
People lack rem sleep because the body needs it for our physiological functions
Hypnagogic sensations
Brief hallucinations that take place as your falling alseep
EEG patterns for stages of sleep
Beta - awake
Alpha - yawning, breathing slows
Theta - brain waves slow and irregular
Delta - your brain waves include alpha and theta waves
activation - synthesis theory
REM sleep triggers neural impulses that evoke random visual memories, which our brains interpret into stories
Dreaming is a result of the brain’s attempt to make sense of random neural activity during REM (rapid eye movement) sleep.
Consolidation theory
Dreams help us sort out the days events and consolidate our memories, stress increases dreams
According to this theory, dreams are not just random neural activity but may actively contribute to organizing, sorting, and integrating memories, emotions, and learning from waking life.
memory consolidation
Memory consolidation is defined as the process of strengthening newly formed memory traces into long-term memories, making them more resistant to interference and integrating them into pre-existing memory networks, often occurring during sleep.
restoration
the process through which memories are actively reconstructed rather than passively retrieved, involving the integration of new information, prior knowledge, and personal experiences.
insomnia
persistent inability to fall asleep or stay asleep, 3 nights per week for 3 months
narcolepsy
(“numb seizure”): sleep attacks, even a collapse into REM/paralyzed sleep, at inopportune times, a few times per month, related to hypocretin deficiency
REM disorder
episodes or arousal with vocalization and/or complex motor behaviors, responses to content of action filled dreams of being attacked or trying to escape, ie. Often loud, profane, and emotion filled
Sleep apnea
(“with no breath”): repeated awakening after breathing stops; time in bed is not restorative sleep, breathing disturbances—snoring; gasping, breathing pauses, daytime sleepiness, fatigue
Somnambulism
rising from bed during sleep, limited responsiveness, blank stare, if awakened usually limited recall
