Short term and working memory Flashcards

1
Q

memory

A

a collection of processes involved in retaining, retrieving and using information about stimuli, images, event, ideas, and skills after the original information is no longer present

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2
Q

computer as a model for

A

human cognition

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3
Q

memory is an integrated system that processes

A

information

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4
Q

memory has a limited capacity

A

space
resources
time

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5
Q

control processes

A

active processes that can be controlled by the person
-rehearsal
-strategies used to make a stimulus more memorable
-strategies of attention

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6
Q

short lived sensory memory registers all or most information that

A

hits our visual receptors
info decays very quickly

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7
Q

persistence of vision

A

retention of the perception of light

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8
Q

sensory memory

A

large amount of information for short period of time

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9
Q

whole report

A

participants asked to report as many letters as could be seen
average 4.5/12 letters 37.5%

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10
Q

partial report

A

participants heard tone that told them which row of letters to report
when the letter disappears you hear a tone
people could recall 82.5% 3.3/4 letters
could recall any row with accuracy
people actually do recall letter but when trying to recall it fades away

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11
Q

delayed partial report

A

presentation of tone delayed for a fraction of a second after the letters were extinguished
performance decreases rapidly

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12
Q

short term memory

A

small amount of information for a brief duration
new info received from sensory stores and info recalled from long-term memory

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13
Q

short term memory is limited in time

A

when rehearsal is prevented is about 15-20 seconds

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14
Q

proactive interference

A

occurs when information learned previously interferes with learning new information

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15
Q

proactive interference appears to be responsible for the quick decay of

A

short term memory
cannot distinguish between the lists

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16
Q

chunking

A

small units can be combines into larger meaningful units

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17
Q

Ericcson

A

trained college student using chunking
initial digit 7
grew to 79

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18
Q

coding

A

the way information is presented

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19
Q

physiological

A

how stimulus is represented by the firing of neurons

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20
Q

mental

A

how stimulus or experience is represented in the mind

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21
Q

auditory coding - Conrad

A

participants saw target letters and were asked to write them down

22
Q

visual coding

A

presented visual information that is difficult to verbalize

23
Q

semantic coding

A

participants listened to three words, counted backwards for 15 seconds, and attempted to recall the three words

24
Q

working memory

A

limited capacity system for temporary storage and manipulation of information for complex tasks such as comprehension, learning, and reasoning

25
short term memory
single component
26
working memory
multiple parts
27
short term memory holds information for
a brief period of time
28
working memory is also concerned with the processing and manipulation of into that occurs during
complex cognition
29
phonological loop is composed of two sub systems
phonological memory store articulatory subvocal rehersal
30
phonological memory store
hold traces of acoustic or speech based material which fade over time
31
articulatory subvocal rehearsal
maintains phonological memory traces translates visual information by subvocal meaning
32
auditory input
sensory memory - central executive - phonological memory store 2 seconds trace kept active using articulatory subvocal rehearsal unit if input not refreshed it decays
33
visual/visuospatial input
sensory memory - central executive- visuospatial sketchpad transfer to articulatory subvocal rehearsal unit for subvocal naming or translation transferred to phonological memory store 2 second limit
34
phonological similarity effect
95% of errors due to auditory similarity - auditory 75% of errors due to auditory similarity - visual
35
Baddeley, thomas, buchanan exp.1 word length
clear advantages for short term words words appear to be coded by temporal duration and not in meaningful units
36
auditory vs visual control
word length effect obtained in both presentation modes support for translation from visual to phonological
37
auditory control vs auditory suppression
suppression caused a decrement in performance word length effect was preserved points to rehearsal as a plausible process for maintenance and superior performance
38
visual control vs visual suppression
suppression eliminated the word length effect points to translation as a plausible process for maintaining visual information with a phonological aspect
39
visuospatial sketch pad
memorize sentence and then consider each word (mentally) phonological - yes if a noun and no if not visuospatial - point to y if noun or n if not visualize capital letter F starting at the bottom left corner phonological - say yes if at exterior corner and no if at interior corner visuospatial - point to y if exterior corner or n if interior corner
40
visuospatial sketch pad results
pointing was easier conducting two verbal tasks overloaded the phonological loop speaking was easier conducting two verbal tasks overloaded the visuospatial sketch pad
41
visuospatial sketch pad conclusion
if the task and the response draw on the same WM component performance is worse than if the task and the response are distributed between WM components
42
WM is set up to process
different types of information simultaneously
43
WM has trouble when similar types of information are
presented at the same time
44
the central executive
attention controller (focus, divide, switch attention) controls suppression of irrelevant information
45
prefrontal cortex is responsible for
integrating and processing incoming information visual and auditory information
46
Funahashi
single cell recordings from monkey's prefrontal cortex during a delay - response task
47
neurons responded when stimulus was flashed
in a particular location and during delay
48
areas involved in WM
frontal lobe and parietal lobe
49
atkinson and shiffrin proposed the modal model of memory
sensory short term long term
50
coding in short term memory is
auditory, visual, and semantic
51
Baddeley proposed
phonological loop visual sketchpad executive control
52
WM is used for both
maintaining and manipulating information