sleep Flashcards

the body's natural 24-hour cycle that regulates various physiological and behavioral processes, such as sleep, wakefulness, body temperature, and hormone release

mental experiences, often vivid and imaginative, that occur during sleep, particularly during the REM (Rapid Eye Movement) stage

a test that records the brain's electrical activity during sleep to help diagnose and monitor sleep disorders, epilepsy, and other neurological conditions

a sleep disorder characterized by excessive daytime sleepiness, even after getting adequate sleep at night, or prolonged nighttime sleep

having difficulty falling asleep, staying asleep, or experiencing poor sleep quality, leading to daytime fatigue and other issues, even with adequate opportunity for sleep

a hormone that your brain produces in response to darkness. It helps with the timing of your circadian rhythms (24-hour internal clock) and with sleep. Being exposed to light at night can block melatonin production

a short period of sleep, typically taken during daytime hours, distinct from the primary nighttime sleep period, and often intended to provide a quick boost of energy and alertness

a chronic neurological disorder that causes excessive daytime sleepiness and an irresistible urge to sleep, sometimes leading to sudden sleep attacks, even during activities like talking or eating.

a type of sleep disorder characterized by sudden, intense episodes of fear and panic that occur during non-REM sleep, often involving screaming, thrashing, and a lack of recall of the event in the morning.

a frightening or disturbing dream that causes the dreamer to awaken, often with a vivid recollection of the dream's content, typically occurring during the rapid eye movement (REM) sleep stage

sleep disorders characterized by undesirable behaviors or experiences that occur during sleep or during partial arousals from sleep

a sleep disorder characterized by an irresistible urge to move the legs, often accompanied by uncomfortable sensations, that worsens at rest and improves with movement, especially in the evening or night.

a naturally recurring, reversible state of reduced responsiveness to external stimuli, characterized by changes in brain activity and physiological functions, and crucial for the restoration and recovery of vital bodily and mental functions

a sleep disorder characterized by pauses in breathing or shallow breathing during sleep, often leading to daytime sleepiness and other health issues

the condition of not getting enough sleep or being prevented from having enough sleep

a temporary state of being unable to move or speak while either falling asleep or waking up

a diagnostic test that monitors and records various bodily functions, including brain activity, heart rate, breathing, and eye movements, during sleep to identify and diagnose sleep disorders

a noisy, rattling breath sound that occurs during sleep due to vibration of tissues in the upper airway, often caused by narrowed or obstructed airflow

the lightest stage of sleep, acting as a transition between wakefulness and deeper sleep, characterized by slowed brainwaves, breathing, and heart rate, and the possibility of muscle twitches.

a light sleep stage characterized by a continued slowing of heart rate, breathing, and muscle activity, along with a drop in body temperature, and is marked by brief bursts of brain activity called sleep spindles and K-complexes

characterized by slow, high-amplitude brain waves (delta waves) and is the deepest stage of sleep, making it difficult to wake up from

the final stage of the sleep cycle, characterized by rapid eye movements, increased brain activity, and temporary muscle paralysis, where most dreaming occurs

a sleep disorder where a person engages in complex behaviors, including walking, while in a deep, non-REM sleep state, often without memory of the event upon waking

the state of being awake and conscious, characterized by alertness and responsiveness to the environment