1.5 Consciousness Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

intentionality

A

the quality of being directed towards an object

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2
Q

unity

A

resistance to divison
- the ability to integrate info from all the senses into one coherent whole
- ex movie theater

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3
Q

selectivity

A

the capacity to include some objects, but not others
- cocktail party phenomenon

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4
Q

dichotic listening

A

a task in which people wearing headphones hear different messages presented to each ear
- consciousness filters out some info

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5
Q

transience

A

the tendency to change
- the mind wanders from one thing to the next

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6
Q

is sleep ever on or off?

A

no. sleep is characterized by levels of deeper and lighter periods of sleep
- each level has a characteristic pattern of brain activity as measured by an EEG

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7
Q

high frequency (beta waves) during…

A

alertness

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8
Q

lower-frequency (alpha waves) during…

A

relaxation

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9
Q

stage 1 sleep

A

theta waves

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10
Q

stage 2 sleep

A

theta waves are interrupted by sleep spindles and k-complexes

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11
Q

stage 3 and stage 4 sleep

A

delta waves (deepest sleep stage)

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12
Q

REM sleep (what kind of waves and what is it?)

A

high frequency saw-tooth waves (similar to beta waves, which are present during wakeful times)
- REM = Rapid Eye Movement
- high level of brain activity

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13
Q

during REM sleep:

A
  • pulse quickens
  • blood pressure rises
  • dreams
  • telltale signs of sexual arousal
    muscle movements indicate that the sleep is very still
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14
Q

amount of sleep required for newborns, 6 year olds, adults?

A

newborn: more than 16 hrs of sleep per day / sleep 6 or 8 times in 24 hrs
6 year old: 11 or 12 hrs
adult: 7 hours

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15
Q

sleep to wake ratio in our lifetime in hours

A

1 sleep: 2 awake

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16
Q

what happened when the rats were sleep deprived

A

-trouble controlling body temperature
- lost weight
- ate more than normal
- their bodily systems break down and they die after about 21 days

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17
Q

how are sleep and memory connected?

A

memory deteriorates unless sleep occurs to help keep them in place

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18
Q

specific effects of REM deprivation

A
  • memory loss
  • excessive aggression
  • REM rebound (rem sleep deprivation causes a rebound of more REM sleep the next night)
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19
Q

insomnia

A
  • difficulty falling asleep or staying asleep
  • most common sleep disorder
  • 6% meet criteria for diagnoses and 30-48% report symptoms
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20
Q

types of insomnia

A
  • self-induced: due to lifestyle choices
  • secondary: due to another medical condition
  • primary: no obvious causing factors
  • each type can be exacerbated by worrying about insomnia
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21
Q

sleep apnea

A
  • a disorder in which the person stops breathing for brief periods while asleep most likely due to obstructions (snoring)
  • occurs most often in middle-aged, overweight men
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22
Q

central sleep apnea

A
  • a person stops breathing while sleeping for no reason (not because of an obstruction)
23
Q

somnambulism

A
  • sleepwalking
  • 15-40% report symptoms
  • most common in kids between 4 and 8 years old
24
Q

narcolepsy

A
  • a disorder in which sudden sleep attacks occur in the middle of waking activities
  • uncontrollable sleep attacks ranging from 30 seconds to 30 minutes
  • straight to REM
  • genetic
  • can be treated with medication
25
Q

sleep paralysis

A
  • the experience of waking up unable to move
  • lasts several seconds to several minutes
26
Q

night terrors

A
  • abrupt awakenings with painc and intense emotion
  • most common in children
  • only 2% of adults
27
Q

Hobson 5 characteristics

A
  • we intensely feel emotion
  • dream thought is illogical (normal continuities of time, place, and person don’t apply
  • sensation is fully formed and meaningful
  • dreaming occurs with uncritical acceptance
  • difficulty remembering the dream
28
Q

Freud dream theory

A
  • dreams are representations of unconscious wishes
  • dreams are a safe place for unacceptable, obscure, and confusing wishes to be expressed (wet dreams, etc.)
29
Q

manifest content

A

a dream’s apparent topic or superifcal meaning

30
Q

latent content

A

a dream’s true underlying meaning

31
Q

activation-synthesis model

A
  • Hobson & McCarley
  • the theory that dreams are produced when the brain attempts to make sense of random neural activity that occurs during sleep
32
Q

depressants

A
  • substances that reduce the activity of the central nervous system
  • barbituates, alcohol, toxic inhalants, benzodiazepines
33
Q

expectancy theory

A
  • alcohol effects can be produced by people’s expectations of how alcohol will influence them in particular situations
  • the belief that one has consumed alcohol can influence someone as much as alcohol can
34
Q

which substance increases the activity of the neurotransmitter GABA?

A

alcohol

35
Q

alcohol myopia

A
  • a condition that results when alcohol hampers attention, leading people to respond in simple ways in complex situations
36
Q

what substance is often prescribed as a sleep aid or anesthetic

A

barbituates

37
Q

what substance is often prescribed as an anti-anxiety drug

A

benzodiazepines

38
Q

what is also known as a “minor tranquilizers”

A

benzos

39
Q

what happens when you mix benzos and alcohol

A
  • respiratory depression (slow and shallow breath)
  • the lungs fail to exchange CO2 and O2 efficiently
  • leads to a build of CO2 in the lungs
40
Q

toxic inhalants

A
  • “Sniffing” or “huffing” glue, hair spray, nail polish remover, or gasoline
  • Temporary effects resemble drunkenness
  • Overdoes can be lethal
  • Continued use can cause permanent neurological damage
41
Q

stimulants

A

substances that excite the central nervous system, heightening arousal and activity levels
- caffeine, amphetamines, nicotine, cocaine, modafinil, ecstacy

42
Q

what type of substance cause increased levels of dopamine and norepinephrine in the brain?

A

stimulants
- increases alertness and energy

43
Q

withdrawal symptoms of stimulants

A

fatigue and negative emotion

44
Q

narcotics

A
  • highly addictive drugs derived from opium that relieve pain
  • heroin, morphine, methadone, codeine, demerol, oxycontin
  • induces a feeling of well-being and relaxation
45
Q

what causes a substance to be addictive?

A
  • if long term use produces both tolerance and dependence
46
Q

hallucinogens

A
  • drugs that alter sensation and perception and often cause visual and auditory hallucinations
  • LSD, PCP, Ketamine, Psilocybin, mescaline
  • not addictive
47
Q

marijuana

A
  • leaves and buds of a hemp plant
  • contains tetrahydrocannabinol (THC)
48
Q

is marijuana addictive?

A

no because tolerance potential is not strong

49
Q

what type of substance is the “most addictive”?

A

narcotics

50
Q

gateway drug + example

A
  • increases the risk of the subsequent use of more harmful drugs
  • marijuana
51
Q

self-knowledge

A
  • having self-awareness
    - building an internal model of the world that contains the self
    - reflecting back on one’s own mode of understanding
    • being alive and awake and aware
52
Q

access to information

A
  • 2 pools
    1. one pool can be accessed by the systems underlying verbal reports, rational thought, and deliberate decision making
    2. the other pool cannot be accessed by those systems
53
Q

sentience

A
  • subjective experience, phenomenal awareness, raw feels, first-person present tense
  • “an organism is conscious if there is something that it is like to be that organism” Thomas Nagel