UNIT 4: AOS 1 (Sleep)

consciousness

the level of awareness an individual has of their thoughts, feelings, perceptions, and existence

psychological construct

an agreed upon description and understanding of psychological phenomena that cannot be overtly measured or observed

normal waking consciousness

a state of consciousness in which an individual is awake and aware

altered state of consciousness

a state of consciousness that is distinctly different from normal waking consciousness in terms of quality of experience and levels of awareness

naturally occurring altered state of conscioussness

a type of altered state of consciousness that occurs without intervention

induced altered states of consciousness

a type of altered state of consciousness that occurs due to a purposeful action or aid

sleep

a regular and naturally occurring altered state of consciousness that involves a loss of awareness and disengagement with internal and external stimuli

REM (rapid eye movement)

a type of sleep characterised by rapid eye movement, high levels of brain activity, and low levels of physical activity

NREM (non-rapid eye movement)

a type of sleep characterised by a lack of rapid eye movement and is subdivided into three different stages

Sleep episode

the full duration of time spent asleep

Sleep cycle

an approximately 90-minute-period that repeats during a sleep episode in which an individual progresses through stages of REM and NREM sleep