Unit 3 quiz 1 Flashcards
Modules 1.5a-1.5c
Conscionuess
The state of being aware of and able to perceive one’s thoughts, feelings, sensations, and surroundings. It involves various levels, from alert wakefulness to altered states such as sleep or meditation; Awareness of ourselves and our environment. like a lightbulb
Circadian Rhythm
The natural, internal process that regulates the sleep-wake cycle and repeats roughly every 24 hours. It influences patterns of alertness, hormone release, body temperature, and other physiological processes; The body’s 24-hour internal clock that regulates sleep, wakefulness, and other bodily functions. like your body’s alarm clock/ scheduler.
Disruptions to Circadian Rhythm (Jet Lag)
A temporary mismatch between your internal clock and the new time zone you’re in.
EX: Your body’s clock is set for New York time, but when you travel to Paris, it gets confused because it’s still operating on the old schedule.
Disruptions to Circadian Rhythm (Shift Work)
Irregular work hours (like night shifts) disrupt your body’s natural sleep-wake cycle.
EX: Imagine trying to make breakfast at 1 AM—your body isn’t used to being awake, so it’s harder to function.
EEG Patterns of Sleep Stages
Brainwave patterns recorded during sleep that show different stages; Think of EEG patterns like music notes. The pattern of the notes changes depending on which stage of sleep you’re in.
NREM Sleep Stage 1
he first stage of non-rapid eye movement sleep characterized by drifting in and out of sleep, lasting only a few minutes.
- Brain waves slow down, muscles relax, and individuals may experience sudden muscle contractions known as hypnic jerks.
; The lightest stage of sleep where you can still be easily awakened.
Analogy: It’s like the transition from being awake to barely drifting off. You’re not fully asleep yet but almost there.
NREM Sleep Stage 2
The second stage of non-rapid eye movement sleep characterized by light sleep, lasting about 20 minutes. - Brain waves further slow down, and sleep spindles (short bursts of brain activity) and K-complexes (sudden, sharp waveforms) appear.; A deeper stage of sleep where brain activity slows down with bursts of rapid waves (sleep spindles).
Analogy: Picture yourself halfway into sleep—you’re not in the deepest part yet, but definitely not waking up easily.
NREM Stage 3
The deepest stage of non-rapid eye movement sleep characterized by the presence of predominantly delta waves - Restoration of Resources The process during sleep where the body and brain replenish energy, repair tissues, and remove waste products, promoting physical and mental well-being.; The deepest stage of NREM sleep, also called slow-wave sleep.
Analogy: Imagine sinking into a really comfy bed and being so deeply asleep that it’s hard to wake up.
Hypnagogic Sensations
Brief, dreamlike sensations experienced when falling asleep.
Analogy: It’s like feeling as if you’re falling, and then suddenly you jerk awake.
Application: You might have experienced this when you’re just starting to sleep, and it feels like you’re tripping or falling.
REM (Rapid Eye Movement) Sleep
A stage of sleep characterized by rapid eye movements, vivid dreams, and muscle paralysis.- It is associated with increased brain activity, including dreaming, and plays a role in memory consolidation and emotional processing.
REM Rebound
The phenomenon where the body increases the time spent in REM sleep after a period of REM deprivation.
It occurs as a compensatory response to the lack of REM sleep, often resulting in more intense and frequent REM sleep episodes.
Activation-Synthesis (Dreams)
A theory proposing that dreams are the result of random neural activity in the brainstem during REM sleep, which is then interpreted and synthesized by the cerebral cortex into a narrative or story.
Consolidation Theory (Dreams)
A theory suggesting that dreams play a role in the memory consolidation and processing of memories. During sleep, the brain organizes and integrates information acquired throughout the day, contributing to memory storage and learning.
Sleep Function (Restoration)
Definition: Sleep helps restore and repair the body and brain.
Analogy: Think of sleep like recharging a battery—your body uses it to recover from the day.
Application: After intense exercise, sleep is crucial for muscle recovery.
Insomnia
A sleep disorder characterized by difficulty falling asleep, staying asleep, or experiencing restorative sleep, leading to daytime impairment such as fatigue, mood disturbances, and decreased cognitive function.
