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Stack #4545063
| Question | Answer |
|---|---|
| Consciousness | Subjective experience of the external world and one’s own mind |
| How do we know anyone else is conscious | We don’t, consciousness is subjective |
| People judge consciousness based on | perceived ability to experience (pain, pleasure, hunger) and to act deliberately (have agency: movement plus self-control, planning, memory |
| Properties of consciousness | Intentionality, Unity, Selectivity, Transcience |
| Intentionality | Conscious OF something – in the world or your own thoughts/emotions |
| Unity | Input from the different senses and your internal thoughts integrated into one experience |
| Selectivity | At any one moment, a person is aware of only a fraction of what they COULD be aware of Inattention blindness experiments Dichotic listening experiment |
| Transcience | Contents of awareness tend to change from moment to moment |
| Attention | Can be snagged by an external event But also, we can voluntarily attend to some external object/events and ignore others Can also direct attention to one’s own thoughts (what to pack for a trip, rehearsing a speech |
| Mind Wandering | Attention disengaged from outside world and directed at own thoughts – but allowed to drift from topic to topic |
| What's in the unconsciousness mind? | MOST of the mental machinery that produces our conscious perceptions, emotions, thoughts |
| Circadian Rhythm | A 24-hour cycle |
| Sleep wake cycle synchronized | To earth’s 24 hour cycle |
| EEG | Combination of EEG, eye movements, muscle activity used to identify sleep stage |
| Sleep Stages 1 and 2 | lighter sleep, easier to wake up |
| Sleep Stages 3 and 4 | “slow wave” sleep. Harder to wake someone up |
| REM sleep | Rapid eye movements under closed eyelids, dreaming, muscles are actively inhibited (brainstem neurons inhibit spinal motor neurons) |
| Sleep Stages follow a | 90 minute cycle all night |
| Functions of Sleep | Physical restoration, Reinforcing memories |
| Physical restoration | Repairing wear and tear to cells |
| Total sleep deprivation | = Death (rat experiment) |
| Short term sleep deprivation | Increased sensitivity to pain, trouble maintaining body temperature, poor immune function, poor retention of new memories |
| Sleep requires | the coordination of many different brain areas, so many ways it can go wrong |
| Insomnia | Difficulty falling asleep or stayi |
| Sleep apnea | Stop breathing for short periods while asleep |
| Somnambulism | Sleepwalking. Occurs during Stage 3 or 4 sleep, not REM sleep |
| Narcolepsy | Suddenly falling asleep during a waking activity |
| Sleep Paralysis | Waking up unable to move |
| Night terrors | Abruptly waking up in a panic |
| Mental activity during sleep | In ALL sleep stages, but qualititatively different between nonREM and REM stages |
| REM dreams marked by | Vivid imagery and bizarreness of content |
| Characteristics of REM dreams | Intense emotion Illogical thought Meaningful sensation (visual > other modalities) Uncritical acceptance Difficulty remembering dreams on waking |
| Theories about Dream content | Freudian and More modern activation synthesis view |
| Freudian | Dreams represent suppressed wishes, transformed to hide their true content |
| More modern activation synthesis view | More modern “activation-synthesis” view: Stored information is being refreshed, updated, and re-arranged (partly to weave in new learning). As snippets fly by, part of our brain tries to turn them into a story. |
| Drug tolerance | Larger dose required to produce same effect over time |
| Psychological dependence | Desire or craving for the substance |
| Depresseants | reduce CNS activity, by increasing activity of GABA – the main inhibitory neurotransmitter. Alcohol Barbituates (medical use before surgery, Seconal, Nebutal) Benzodiazepines (prescribed for anxiety, Valium, Xanax) Inhalants (drugs of abuse only) |
| Stimulants | increase CNS activity, but in many different ways across drugs Caffeine ,Nicotine, Amphetamines (Methedrine, Dexedrine , Cocaine, Ecstasy/MDMA Drugs prescribed for attention deficit disorder (Adderal, Ritalin, Concerta) |
| Opiates | Originally from a plant. Bind to the same receptors as naturally occurring neurotransmitters called endorphins (for “endogenous morphine |
| Cannabis | THC in the plant binds to same receptors as a naturally occurring neurotransmitter called anandamide – discovered in 1992. |
| Halluciogens | (LSD from a mold, psilocybin from mushrooms, mescaline from cactus, synthetic compounds like Ecstasy): Affect neurotransmitters in midbrain (dopamine, serotonin) that in turn influence the cortex |
| Learning grounded in the | behaviorist tradition in Psychology |
| Learning takes a | quantitative approach to the relationship between an organism’s past experience and current behavior |
| Memory | Theories include unobservable mental processes (NOT behaviorist) |
| Types of Learning | Nonassociative, Associative, Social |
| Nonassociative | The response to a single stimulus changes when the stimulus is repeated |
| Associative | Learning about relationships between events |
| Social | Learning by instruction or by observing the behavior of others |
| Habituation | Decreased response after repeated exposure to a stimulus, especially if the stimulus is neither harmful nor rewarding |
| Dishabituation | Increased response because of a change in something familiar |
| Sensitization | A threatening or painful stimulus leads to an increased response to a subsequent stimulus (the same or a different stimulus) |
| Classical Conditioning | Learning that one stimulus predicts another |
| Operant conditioning | Learning the relationship between a response and the consequences of that response |
| Unconditioned Stimulus | Naturally produces a particular response |
| Unconditioned Response | Reliable Response to the US |
| Conditioned Stimulus | Initially neutral and produces no response |
| Conditioned Response | Resembles the UR after conditioning |
| Acquisition | Phase of classical conditioning when the CS and the US are presented together |
| Extinction | CS occurs without the US and the learned response (CR) is gradually eliminated |
| Spontaneous Recovery | Tendency of a learned behavior to recover from extinction after a rest period |
| Simple motor responses | Eyeblinks, breathing rate |
| Activities of glands and internal organs | Salivation, release of hormones, heart-rate, etc |
| Emotional responses | Contain elements of both |
| Second order conditioning | Pair a new neutral stimulus with the conditioned stimulus (CS). Afterwards, it will also produce the conditioned response (CR) |
| Generalization | Stimulus that is similar to the CS produces CR too |
| Discrimination | Learning that a stimulus similar to the CS is NOT followed by the US, so CR stops occurring |
| Eyeblink | Unconditioned stimulus: Puff of air to the eye Response: Blink Conditioned stimulus: tone After pairing tone & puff: tone alone produces blink |
| Taste/smell aversion | Gastrointestinal illness shortly after eating/drinking some particular food Later, the taste and smell of that food produces nausea |
| Learning | a stable change in the organism due to change in the strength of the connections (synapses) between specific neurons |
| Classical conditions changes | synaptic strengths in the same brain structures that govern the UNconditioned response |
| Operant Conditioning | Learning the relationship between a response and the consequences of that response |
| Behaviors followed by a good outcome are | Likely to be repeated |
| Behaviors followed by a bad outcome are | Less likely to be repeated |
| Reinforcement | A stimulus or event that increases the behavior that led to it. |
| Punishment | A stimulus or event that decreases the behavior that led to it. |
| Postive | Prescence of something |
| Negative | Absence of something |
| Reinforcement is | Superior when it comes to changing behavior |
| Reinforcement indicates | What the desired behavior is |
| Primary reinforcer | Satisfied biological needs |
| Secondary reinforcer | Associated with or predicts a primary reinforcer |
| MFB= | Medial forebrain bundle |
| VTA= | Ventral tegmental area (part of midbrain), neurons take out dopamine |
| A behavior declines in frequency when | No longer rewarded |
| Intermittent Schedules of Reinforcement | Fixed/Variable ratio and interval |
| Fixed ratio schedule | Reward is delivered after a specific number of responses have been made |
| Variable Ratio Schedule | Reward is delivered after some average number of responses – but there is variability around the average |
| Fixed Interval Schedule | A response will produce a reward after a fixed amount of time has passed since the last reward |
| Variable Interval Schedule | A response will produce a reward at some average amount of time after the last reward – but there is variability around the average |
| Three Term contingency | Discriminative stimulus (context), response, reinforce, Animal or person learns that a response will be rewarded in one context but not anothe |
| Superstitious Behavior | Behavior increases when correlated with reinforcement But the impact of intermittent reinforcement shows that even a weak correlation can be effective |
| Latent Learning | Learning without reward |
| Acquired knowledge can be | more crucial than a particular rewarded response |
| Social Learning | Observational Learning (Bandura bobo doll experiment), Vicarious fear conditioning |