Consciousness Flashcards
(49 cards)
What are 4 different states of consciousness?
- Alertness
- Sleep
- Dreaming
4.altered stages of development (meditation, hypnosis, drug induced)
_____is when you are awake and are able to perceive info around you. EEG shows that brain is awake?
Alertness
How many waves are seen on an EEG which corresponds to different stages of consciousness?
BETA - awake and mental processes are being carried out
ALPHA - awake but relaxing phase
THETA - stage 1 NREM1 and stage 2 NREM 2
*im s2 NREM, theta waves consists sleep spindles and K complex
DELTA - stage 3 NREM3/slow wave sleep
REM (wave associated with rem sleep) - rapid eye movement. Physiological body is awake but individual is still asleep.
*dreaming occurs during this stage
What’s the other name for REM?
Paradoxical sleep
_______ is a complete progression through sleep stages
Sleep cycle
what average length of sleep cycle in
1. In adults
2. In children
- 90 mins
- 50 mins
_______is cycle of waking and sleeping. It is usually 24 hours long
Circadian rhythm
Circadian rhythm is controlled by _____
- Melatonin - sleep
- Cortisol - wakes up
Where is cortisol produced?
Adrenal cortex
How is cortisol produced and released ?
Increase in light during the day causes the releases of Corticotropin releasing factor (CRF) which causes release of adrenocorticotropic hormone (acth) from anterior pituitary. This then stimulates the release and of cortisol from adrenal cortex
____________axis helps in the control of behaviour through endocrine system
Hypothalmic-pituitary-adrenal
What are different sleep Theories?
- Activation synthesis theory
- Problem solving theory
- Cognitive processes theory
- Neurocognitive model of theory
__________ theory talks about how dreams are formed due to random firing of neurons
Activation synthesis theory
__________theory states that dreams help an individual solve problems in ways they wouldn’t have been able to come up with
Problem solving
_______theory relates dreams to the wakeful periods. It talks about how dreams jump from one topic to another just like we do when we change stream of thoughts when awake
Cognitive process down theory
________theory unifies biological and psychological aspects of dreaming
Neurological model of dreaming
What are 2 kinds of sleep-wake disorders?
- Parasomnias - abnormalities during sleeping
- Dyssomnia - difficulty falling or staying asleep
Most sleep wake disorders occurs during _____sleep
NREM
What all disorders come under parasomnias?
- Night Terrors- •during SWS, sympathetic system overload, very difficult to wake up
- Sleep walking/somnambulism - eat, sex, talk, during SWS. Can be woken up. Wont remember the event
Types of dyssomnias ?
- Insomnia - difficulty falling or staying asleep.
- Narcolepsy- no voluntary control over sleep
- Cataplexy - loss of muscle control
- Sleep paralysis - not being able to move even when awake
- Sleep apnea - inability to breathe during sleep . Obstructive or central
_________hallucinations ocurr while going to bed?
Hypnagogic
_________hallucinations ocurr while getting out of bed?
Hypnopompic
______is when an individual gets no sleep for night or multiple nights
Sleep deprivation
Sleep deprivation leads to ____when the body gets longer duration of REM when it sleeps the next day
REM rebound
