Upgrade to remove ads
Sleep: VCE Psychology Unit 3 & 4
Terms in this set (43)
A machine used to detect, amplify and record the brains electrical activity
a machine used to detect, amplify and record the electrical activity of the muscles surrounding the eye.
records the activity through small electrodes attached to the skin around the eyes
a machine used to detect, amplify and record the electrical activity created by active muscles of the body.
uses electrodes attached to the skins surface
going without or not getting sufficient amounts of sleep
partial sleep dep
having less sleep then what is normally required
total sleep dep
not having any sleep at all
temporary psychological problem caused by severe sleep loss. A disruption of mental and emotional functioning.
When a person who is deprived of sleep they will experience this, where they get extra amount of REM sleep after being deprived of it.
When sleep-deprived the body experiences these, which is a short period of sleep where the individual appears to be awake. Their eyes may be open, however brain activity indicates they are asleep.
Most likely to happen when performing monotonous tasks
suggests that sleep is vital for replenishing and revitalizing the mind and body to keep them functioning at optimal levels
an explination of the purpose of sleep that proposes that sleep evolved to enhance survival by protecting an organism, making it inactive during the ay when most risky or dangerous to move about
an altered state of consciousness that features the suspension of awareness of the external environment and is accompanied by a number of physiological changes to the body
an individuals internal body clock, which cycles approximately every 24 hours, its linked to external cues such as presence or absence of light, alarmclocks, meal times and teevision
light driven cycle
Lack of light triggers the pineal gland, melatonin is released, an the level of sleepiness increases
rhythms of sleep and waking so steady that they continue for many days. When external cues are removed, humans have a sleep cycle that averages 25 hours.
a state that is experienced just before falling asleep and is characterised by slow, rolling eye movements and deep relaxation
The time when the body recuperates and recovers from fatigue incurred during the day. approx 80% or time spent in this stage
a period of rapid eye movement. Brain wave patterns are irregular with short, high frequency beta waves
sleep that is owed an needs to be made up
sleep-wake cycle shift
During adolescence there is a hormonally induced shift of the body clock forward by about 1 or 2 hours, making the adolescent sleepier one or 2 hours later.
refers to the number of brain waves per second.
A pattern of high frequency refers to greater brain activity. Fewer frequency = slow brain activity
refers to the size of the peaks and troughs in brain activity compared to a baseline of zero activity.
High amplitude = large peaks and troughs
low amplitude = small peaks and troughs
low amplitude and high frequency - shown in REM and NWC
low-medium amplitude, medium-high frequency, shown in NWC and Stage 1 (with some theta waves)
mix of medium-high amplitude and low-medium frequency. Shown in Stage 2 & Stage 3 (Stage 3 begins to show delta waves also)
high amplitude and low frequency. Shown in Stage 4
a controlled environment that enables electronic recording and measurement of sleep
a gland located in the center of the brain, between the two hemispheres, that help regulate body rhythms and sleep cycles.
a hormone to regulate the sleep wake cycle and causes drowsiness when secreted.
electrocardiograph. A machine used to detect, amplify, and record the electrical activity of the heart.
measured with a thermometer. Body temperature drops about 1 degree Celsius during sleep
a reflex muscle contraction that occurs during stage 1 NREM sleep as the body is relaxing
type of brain activity characterised by short bursts of high frequency brainwaves. This indicated the person is truely asleep.
happen in stage 2
a single, short burst of high amplitude brainwaves thought to be involved in memory consolidation.
happens in stage 2
another word for REM sleep, internally the brain is active while externally the body is inactive
occurs as we drift in and out of true sleep.
Marked by alpha brainwaves, then theta waves begin to appear.
Lasts around 2-10 minutes.
the stage where someone is truly asleep, still considered light sleep
lasts about 10-20 minutes.
shows theta waves. Also records sleep spindles and k-complexes.
moderately deep sleep stage
lasts for approximately 3-10 minutes. Delta waves appear. Then slow wave sleep begins for around 30 minutes
deepest stage of sleep, called very deep sleep. Delta waves dominate. Initially spend 20 minutes in this stage, then decreases.
When sleep phenomena occurs
during REM sleep when the muscles are paralysed
REM behavior disorder
a lack of muscle paralysis in REM sleep
Characteristics of sleep in older people
Older adults tend to have difficulty reaching Stages 3 & 4
Characteristics of sleep in infants
Infants sleep for longer ( around 16 hours) and spend longer amounts of time in REM sleep (50%)
THIS SET IS OFTEN IN FOLDERS WITH...
Consciousness: VCE Psychology Unit 3 & 4
Research Methods: VCE Psychology Unit 3 & 4
Memory: VCE Psychology Unit 3 & 4
Learning Theories: VCE Psychology Unit 4
YOU MIGHT ALSO LIKE...
psych chapter 3
Chapter 3 - Sleep
OTHER SETS BY THIS CREATOR
Verbos seguidos de preposiciones
Palabras de enlace
FRANCE AOS 2 HISTORIAN QUOTES