PSYCH chapter 5
111 flashcards · Psychology · by Sophia Vona
Consciousness
awareness of: internal stimuli and external stimuli; including awareness of self and thoughts
alert
awake, aware
asleep
not awake, semi aware
coma
not aware
unresponsive wakefullness syndrome
awake, unaware
min conscious
awake, semi aware (inconsistently aware)
freud theory of conscious
1) it exists (first to posit it) 2) feelings and behaviors influenced by unconscious needs, wishes, concepts
william james branch of psych
functionalism
william james theory of consciousness
streatm/flow of consciousness, mind wandering, conscious fluctation! (functionalism) not static points (structuralism)
EEG
electrical net activity of outside potion of brain over time. electrodes attacthed to scalp
EMG
musical activity tension
EKG
heart contractions
EOG
eye movements
alert/awake breain waves
beta: 13-24 cycles per second (highest rate)
relaxed/ dorwsy brainwaves
altpha 8-12 cps (middle)
stage 1 sleep time brainwaves cps
"i wasn't asleep" 10-12 min theta + some alpha 4-7 cps (second lowest. has range not just singular number)
stage 2 sleep time brainwaves cps
"i wasn't asleep" (sometimes) 10-25 min theta, sleep spindles (crescendo to decreasecndo in eye shape; big spikes, low frequency waveform, high amp) k complex: big spike like ekg heart beat 4-7 cps
stage 3 sleep time brainwaves cps
SLOW WAVE SLEEP 20-40 min (w/ stage 4, which it can be combined with) difficult to awaken, groggy slow up and down eye movement 0-49% delta waves <4 cps
stage 4 sleep time brainwaves cps
SLOW WAVE SLEEP 20-40 min (w/ stage 3, which it can be combined with) same as 3: difficult to awaken, groggy slow up and down eye movement LIMITED MUSCLE ACTIVITY RYHTHMIC BREATHING >50% delta waves <4 cps
REM
majority of dreaming difficult to awaken without meaningful stimuli alert when woken rapid side to side eye movement muscle atonia no sleepwalking erections brain waves: beta, sawtooth (high frequency, low amp waves). similar to wavefullness.
sleep architecture:
1234 REM 4321 234 REM x4 or x5 in a night first half: no rem or little REM second half: lots of REM peak: 40-60 min. must presevre for benefits of sleep
biological rythm
periodic fluctuations in physiological functions: tied to planetary rythms
circadian rythms:
24 hour bio cycle sin humans + other species: important to sleep regulationa nd arousal entrained by light: day and night cycles
major bio clock
SCN: superChiasmaticNucleus: in the hypothalamus
sleepiness regulation pathway
SCN (superchiasmaticnuclues -> pinneal gland -> melatonon regulation -> sleepiness regulation
Jet lag is what
circadian rythm + sleep schedule out of sync with day night cycle
jet lag "symptoms"
bad quality sleep sleepiness during day higher incidence physical diseases less productiity bad social relations worse mental health rotation schedules can cause it social jet lag: waking up on different times during weekend
what takes longer to recover from: e to w jetlag or w to e??
east to west
drugs in regulating circadian rythm
adenosine caffiene melatonin
adenosine
binds to receptor, creates greater amounts of sleepiness
caffeine:
blocks adenosine receptors, caffeine crash when caffiene leaves receptors and al built up adenosine rushes receptor.
melatonin
hormone
T F: newborns have consolidated sleep
False: sleep 6-8 times in 24 hours,
how long do neborns sleep
sleep for >16 hours
REM in newborns vs adults
newborns: 50% of sleep is REm adults: 20% is REM
T or F: total sleep declines moderatey in old people
T
does SWS or REM change in old people
both: 50% less SWS slightly less REM
sleep schedule odl people
go to sleep and wake earlier!
culture and sleep: is there much variation?
No! Siesta culture to avoid hottest parts of day when working exists in some countrues african americans and white americans report lower sleep quality than asian and hispanic americans
sleep deprivation (selective REM deprivation effects)
slip into REM more, eventually everyt time you fall asleep
sleep deprivation (selective SWS effects):
health problems
mortality curve in sleep deprivation
less than 7 and more than 9 associated with higher morality (higher sleep might be indicative of things like depression though)
complete sleep deprivation effects
weary irritable, paranoid, attention lapses, memory deficits, microsleep, hallucinations
partial/ restrcited leep deprication
inconsistent sleepy attention deficits lower rxn time lower motor coordination more poor decisions lower endocrine and immune system function correlations increased accidents, higher rates physical issues (weight gain, disease)
rebounds from deprivation effects include
selectve SWS or REM make up 50% of SWS and REM, not stages 1 and 2
cognitive effects sleep deprivations
lower IQ worse memory consolidation less insights (correlation with REM) worse learning/problem solving babies have more rem, older people have less rem
Theories of sleep
congitive development function? babies with higher REM energy conservation? - dolphins, only 20-30% metabolic decrease protection against predators? restore bodily resources? rat study, couch potatoes vs athletes.
insomnia
Symptoms: difficulty falling asleep and staying asleep nonrestorative sleep demographics more in women more old age Effects reduced productivity, absenteeism higher risk accidents more anxiety more depression TX: sleep hygiene CBT, relaxation training, benzaodiazapenes, melatnonin cons o meds: overdose, abuse, druswsy/ sluggish next day, tolerance, withdrawal
Hypersomia
Symptoms: nonrestorative sleep no mater what no underlying condition uncommon greater 1 month TX: stimulants
Narcolepsy
Symptoms: sudden, irresisteble sleep during waking periods refreshful one or more present (REM instrusions_ cataplexy (msucle atonia) sleep paralysis hallucinations wakefulness to REM for 10-20 min Demographics: genetic predisposition TX: stimulants: stop sleep attajs SSRI's: stop rem intrusions
REM sleep behaving disorder
Symptoms: troublesome/violent dream enactments during REM Effects: may precede Parkinson's up to 10 yrs
Sleep apnea
Symptoms: frequent, reflecive gasps for air after you stop breathing (~10 s), waking you up 10 -15 min / 1 hr sleep = clinical excessive daytime sleepiness Demographics: males overweight over 50 Effects: doubles mortality risk increases vulnerability to cardiovascular disease obstructive or CNS causes. TX: CPAP lifestyle changes (can be from meds) other meds airway/craniofacial surgery pressurized automatic breather
sommabulanism
Symptoms: repeated episodes of sleepwalking not due to dreams: no REM bc muscle atonia trauma in adults no recall of eps 15% kids, 3.6% adults Demographics: people who are stressed, sleep deprived, genetic factors Effects: life threatening incidents/ accidents TX:
nature of dreams (adults)
about you familiar characters mundane (usually) tolerant of ligical discrepancies + implausible scenarious external stimuli can effect (content before bed or sensations while sleeping) freud's "day residue"
nature of dreams (children)
more static images than narrative verbal limits of research messing with conclusions? maybe?
nonwestern culture and dreams
sources of info about self, future, spiritual world
crosss cultureal dream similarities
futture, falling, being chased, sex,
western culture and reams
lots of sex and aggression
Freid theory of dreaming
wish fulfilment
Rosalind Cartwright
theory od dreams problem solving/mood regulation reflect and regulate on your tone creative problem solving evidence? rem enhances learning?
hobson
theory of dreams activation synthesis model side effects of beta wave production neurons fire in ower brain center (pons), causes sprie in geniculate nucleus, causes spike in cortex (occipital lobe). synthesizes dreams to make sense of signals downlpas emotions and powerful dream content. also, dreams outside of rem
hypnoses
systematic procedure, produces heightened state of suggestibility
associative features of hypnosis
anesthesia (drugs more reliable) sensory distortions/hallucinations (cant lift something you think is heavy) disinhibition "not my fault" posthypnotic suggestions/amnesia (ie obesity) "hypnotizability" consistent trait over time must be willing to be hypnotized
franz anton mesrar
illicit hypnotist, claimed to cure people from illness with power of suggestion
james braid
anesthetic by hypnosis b4 drugs
today's scientists uses of hypnosis
psych problems + physical ailments headaches, skin disorders, IBS, obesity, fear of flying, smoking
ernest hilgard
hypnosis as a form of dissaociation splitting of mental processes into two, separate, simultaneous streams of awareness. communication with hypnotist in real world difficult to detect, hidden observer. pain (anesthesia) registered here highway hypnoses proof: no conscious recollection despite response to stimuli
meditation
family of practices that train attention to heighen awareness + bring mental processes under greater voluntary control
meditation 2 types
focused attention (transcendental meditation) open monitering (zen)
focused attention
type of meditation direct attention to specific object, image, sound, bodily sensation (breathing)
open monitering
type of meditation direct attention to contents of moment to moment experiences expand attention, become dethatched
meditation associative features
EEG: higher alpha (drowsy) higher theta (light sleep) less parietal lobe activity increased left prefrontal lobe activity transcendent experience (not just relaxation) less stress, lress anxiety, lower BP higher immune function, better mood, better self esteem, better overall health
Narcotics do what
pain relief (anelgesic), cough, diarreah CNS depressant
narcotics examples
morphine, heroin, oxycodone, codeine, methadone, demerol
Narcotics primary effects
CNS depressant sense of well being, less anxiety drowsiness impaired mental/ motor functioning constipation higher rate of infectious diseases
withdrawal on narcotics
severe diarreah
overdose on narcotics
damage to medulla (often fatal)
sedatives used for
sleeping issues: sedatives CNS depressant
Sedatives types
barbituates, benzodapines
sedatives effects
CNS depressant: increase relacation inreaced drowsiness lower anxiety imparied mental physical function; thus increased risk accidents
sedatives withdrawal
not too dangerous
sedatives overdose
medulla *synergstc with alcohol
synergistic drugs:
more dangerous / potent when combined than individual effects doubled.
sedatives backfire
quick tolerance build -> medication can backfire bc of non-dangerous compensatory mechanisms from withdrawal (body makes you more alert- harder to fall asleep, or more daytime sleepiness).
stimulants used for
narcolepsy, ADHD, local anesthetic raises CNSactiviy
stimulants examples
caffeine, oxycodone, cocaine, amphetamines, mDMA (low doses)
stimulants effects
euphoria increased energy increased alterness more CV arousal and or CV problems more respiratory priblems panic insomnia psychosis lowered apetite higher swetaing/urination damaged nasal membranes
hallucinogenic used for
alters sensory/ perception
hallucinogens examples
LSD, mescaline, psilocybin (shrooms) mdma (high doses- aka ecstasy)
hallucinogens effects
euphoria senory + perceptual experiences anxiety, paranoia (bad trip) kills 5-HT neurons impaired judgement, higher risk accidents.
cannabis uses
naurua, pain, cancer, gluacoma
cannabis ex
marijuana, hashish, THC
cannabis effects
euphoria, relaxation, sensory/ perceptual distoritions increase hunger (sweets) short term memory impairments metabolizes slowly increased lung disease, cancer, psychosis ?? maybe?? not super well proven decrease IQ in younger users decreased memory in middle aged users higher accident risk
alcohol effects
CNS depressant euphoria relaxation mood swings quarrelsomeness: involved in 90% of student rapes, 95% of violent crimes on campus bio effects: impairments in cognitive/motor fxn, 21% unplanned sex, 1/2 fatal car accidents, 40% fatal bike accidents liver damage, ulcers, hypertensin, stroke, neuro issues (korsakcs syndrome) cancers, increased mortality, toxic to cells: "intoxication" social relationship, job, school sufering etc
CNS despressants
alcohol, sedatives, narcotics
dugs that increase CNS activity
stimulants
drugs dont affect CNS
marijuana, hallucinogens
alcohol withdrawal
delirium tremors: shakes, delerium, could be fatal
12 drinks per year
regular
5+ drinks on 1 occasion, 1x a month
binge drinker