Intro to Cognitive Psychology Flashcards

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1
Q

what is cognitive psychology?

A

the scientific study of thought, experience, and perceptions

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2
Q

what approach does cognitive psychology take?

A

information-processing approach

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3
Q

what does the information-processing approach involve?

A

the stimulus enters the brain and is processed serially through different modules, towards a decision and motor response

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4
Q

what is the mind viewed as?

A

a stimulus response machine, by receiving electrical signals from sensory systems to perceive information

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5
Q

bottom-up processing

A

directly caused by the stimulus

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6
Q

top-down processing

A

influences of an individual’s mind and prior experiences

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7
Q

how are conscious experiences represented?

A

activity of many neurones

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8
Q

evidence of neurones representing complex information

A

grandmother cells having ‘preferred’ stimuli

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9
Q

rate coding

A

greater rate of neurone’s response

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10
Q

temporal coding

A

greater synchrony of several neurone’s responses

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11
Q

how many neurones are approx. in the human brain?

A

80 billion

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12
Q

what percent of brain cells are neurones?

A

50%

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13
Q

electrophysiology measures…

A

electrical activity within brain cells by single-cell recordings
- EEG
- ERPs

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14
Q

EEG measures…

A

real-time neural activity via electrodes on the scalp

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15
Q

ERPs…

A

generate average EEG waveforms to compare across psychological conditions

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16
Q

benefits of electrophysiology

A

portable, inexpensive, and strong temporal resolution

17
Q

limitations of electrophysiology

A

poor spatial resolution

18
Q

structural imaging (MRI) measures…

A

the time taken to relax from radio frequency
- diffusion tensor imaging
- functional imaging

19
Q

diffusion tensor imaging…

A

observes water diffusion across white matter to measure cognition across brain regions

20
Q

functional imaging (fMRI)…

A

measures the blood oxygenation dependant signal between brain regions

21
Q

benefits of structural imaging

A

good spatial resolution

22
Q

limitations of structural imaging

A

poor temporal resolution, and is not a direct measure of neurones

23
Q

brain stimulation (TMS) produces…

A

magnetic fields to induce electrical activity and observe cognitive behaviour

24
Q

benefits of brain stimulation

A

non-invasive, and provides causal evidence

25
Q

limitations of brain stimulation

A

weak brain stimulation results in weak effects, and potential risk in epilepsy

26
Q

ways to study cognition

A
  1. experimental cognitive psychology
  2. cognitive neuropsychology
  3. cognitive neuroscience
27
Q

how does experimental cognitive psychology study behaviour?

A

in a controlled laboratory setting using indirect behavioural meaures

28
Q

benefits of experimental cognitive psychology

A

generates cognitive theories that contribute to neuroscience and empirical science

29
Q

limitations of experimental cognitive psychology

A

uncertain whether psychological concepts exist, and low ecological and face validity

30
Q

what does cognitive neuropsychology study?

A

patients with brain injury to discover cognitive functions following damage to particular regions

31
Q

limitations of cognitive neuropsychology

A

lack of baseline data, generalisations, and assumptions of modularity

32
Q

limitations of cognitive neuroscience

A

expensive, invasive, and emphasis on measuring effects over testing theories

33
Q

what do illusions provide evidence of?

A

perception is not veridical, as sensory systems are imperfect and idiosyncratic

34
Q

why is perception unreliable?

A

affected by top-down processing expectations, and limited cognitive processes