Attention (easy exam)

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  • Created by: 10dhall
  • Created on: 14-05-19 21:32
What is Broad Bent 1958 about?
All info is input parallel into sensory registers this is filtered to a 'selective' filter where iput is selected to not overload control capacity. the Selected input continues to short term memory
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Limitations?
When sensory of input is different, normal processing occurs
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What is Allport Antoni'st Reynolds 1972 about?
Found implicit remembering of unattended stimilus
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What is Treisman 1960 about?
Leaky filter - limited capacity, selection of stimuli is made a meaning not ____ question, when capacity is reached, tests more important are remembered. Thresholds of context appropriate stimuli is reduced
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Pereceptual loud theory?
Lavie 1995, limited capacity, if the target task exhausts capacity there are no recourses left to process distractor, if target doesn't exhaust resources - removing resources process distracts
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Covert attention?
Posner 1980, attention spacially shifted without age movement
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Attention spotlight case?
Rosher 1980 - covert attention
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Directed attention?
La Berge 1983 - mean reaction of me to a probe dependant one positioning
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Key reading - Zoom lens 1990?
Study to find spatial attention and focus, found that size of attention can be spoiled across entire visual field, procuring efficiency decreases when area increase, there is a gradual drop off procuring efficiency around attention focus
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Inverse rel between size and efficiency?
Smaller field = more efficient. Spatial can be varied - but longer = len efficient - off when positioned inside focus, decreased efficiency as the positioning is outside of focus
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Feature integration theory?
1998 Triesman, object features (size colour etc) are separable from the object, when presented - there is a rapid parallel process to denote features, attention is not necessary. If attention is applied to the visual field, all features are integrat-
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Feature integration theory?
Integrated serially to construct object, feature application is affected by stored knowledge. Illusionary conjunction features mix up, this is due to a lack of attention and when stored knowledge is absent / incorrect
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Mri?
Strong magnetic field applied on brain
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FMRI?
Uses BOLD level
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What happens when neurons consume oxygen?
They convert oxyhemoglobin to deoxyhemogoblin - this is recognised and changes BOLD
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What is hemodynamic response function? (HRF)
Refers to how the BOLD levels changes over time, HFR means neurons is alive
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Card 2

Front

Limitations?

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When sensory of input is different, normal processing occurs

Card 3

Front

What is Allport Antoni'st Reynolds 1972 about?

Back

Preview of the front of card 3

Card 4

Front

What is Treisman 1960 about?

Back

Preview of the front of card 4

Card 5

Front

Pereceptual loud theory?

Back

Preview of the front of card 5
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