Conciousness and Sleep Chap 5 Flashcards
Consciousness
Our, awareness,perceptions and experiences.
circadian rhythyms
biological rhythms with the 24 hour time.
light entrainments
- ganglion cells
- supnachiasmatic nucleus
- release of melatonin
- melatonin accumulates with darkness
Endogenous rhythms
biological rhythms generated by our body
restore and repair
sleep to repair and restore our bodies, “physiological housekeeping”
preserve and protect
sleep protects us from harm and preserves energy
stages of sleep / stage 1
Breathing, heart rate decreases
stages of sleep / stage 2
less responsive
stages of sleep / stage 3 and 4
brain activity slows down
REM Sleep
associated with dreaming and same as awake state
Beta waves
“awake”
Alpha waves
“Drowsy State”
Characteristics of sleep deprivation?
- more readily falls asleep
- cranky
- attention deficits
- reading/studying feels impossible
- micro sleeps
Costs of sleep deprivation?
- emotional deficits
- incrrease of car accidents
- doctors make more errors on longer shifts
Sleep Displacement
A shift of when we sleep. Ex: Jet lag and daylight saving time.
Sigmund Freud
Argued that are dreams were wish fufilment
Manifest Content
the images and stories of our dreams
Latent content
The symbolic meaning of our dreams
Activation-Synthesis
when we sleep, our brain sends signals to our cortex
Problem-solving theory
what we drream is related to our awake state
Stress hormones
Activate durng day and effect dream memorability
onset insomnia
difficulty falling asleep
maintenance insomnia
difficulty returning to sleep
terminal insomnia
waking up to early
primary insomnia
due to wrries
secondary insomnia
due to drug use
nightmares
negative emotional content dreams
night terrors
waking up in an intense state of panic
Restless legs
Always moving their positioning
REM Behaviour
Acting out drreams physically
somnabulism
wandering and performing activities while asleep
sleep apnea
always get obstructed, difficulty breathing during sleep
narcolepsy
difficulty controlling when/ what time they sleep
Hypnosis
a highly relaxed state
ideomotor
actions to be performed
challenge
actions to not be performed
cognitive - perceptual
to remember or forget
Dissociation theory
Losing track of surroundings and time. “Autopilot” and “reading books”
Social - cognitive theory
Emphasizes beliefs and expectations contribute to sugestibillaty
Uses of Hypnosis
- medical treatment
- acute pain relief
- recovery of false memories
mind wandering
an unintentional redirection of our attention
default mode network
series of structures in brain that are activated when resting
Glasgow coma scale
Checklist to measure basic responses
brain death
zero activity in brain
coma
complete loss of consciousness
persistent uegetative state (PVS)
minimal to no consciousness
PVS patients
- show signs of consciousness
- MRI scans shows brain activity
Minamilly concious state
show behaviours that suggest partial consciousness
locked-in syndrome
concious, normal emotions but paralyzed. Ex: “Stephen Hawking”
Drugs
Affect neurotransmitter / blocks the brain
Nucleus accubens
rich in dopamine releasing cells
Tolerance
The more you take, the more you need
Physical Dependance
the need to take a drug, experiencing withdrawls
psychological dependance
the need to take a drug, to ward off negative emotions
Context - depndant
anticipatory drug response. “Anticipating a drug”
Stimulants
Speed up nervous system.
Increased
- Euphoria
- Energy
- Dopamine
- Serotonin
Physical Deteriation
- neglected hygiene
- toxic ingrediants
Cognitive deteriation
- Structural abnormalities
- decrease in emotion
