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Definition
Attention occurs later in the info processing sequence- after the meaning has been determined - all info in sensory mem is processed |
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Unattended info is actively inhibited,, not just filtered out and allowed to decay. -Can be measured using negative priming. |
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| Reaction time slows on the target trial when that target had been ignored on the previous trial. |
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| name the word in red ink in trial one, then in trial 2 the word in red ink will be the same word you actively ignored in trial 1 (the green ink) rt will be slower after being actively inhibited. |
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| Peripheral interference hypothesis |
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Definition
| Interference due to physical things like holding the phone. |
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| interference is due to directing attention to conversation. more mental. |
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| Involving conscious processing |
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| no necessary involvement of conscious awareness |
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| the mental attention-focusing mechanisms that prepare you to encode stimulus information. |
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| target pops, parallel search, search rates dont vary as size set increases. |
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| search for a target containing features that the distractors also have |
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| deficit of attention due to brain damage..victim has decreased ability to detect and object in the visual field opposite of the damaged side. Damage is usually to the right parietotemporal region. |
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| Automatic Processes ( posner 1075) |
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Definition
1. unintentionally 2. happens without awareness and introspection 3.consume few attentional resources 4. operate rapidly w/in 1second |
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1. Intentional 2. Open to awareness and introspection 3. consumes attentional resources 4. Slow! takes more than 1sec |
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Congruent condition( same color font as word-red in red) Incongruent condition( Red in green) Neutral condition( non color words printed in a color) |
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Reaction time is slower in the incongruent condition -Reading is automatic and difficult to inhibit |
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| Rods and cones initiates visual sensation and perseption |
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| back layer of neurons on retina and first neurons stimulated by light |
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| highly sensative region of the retinal responisble for focused vision, composed of cones |
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| rods and cones send info to the bipolar cells |
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| collected messages from the bipolar cells go to the ganglion cells |
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Definition
they leave the eye and form the optic nerve via lgn (the primary visual cortex) and the superious colliculus of the thalamus |
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| How do eyes transmit visual information to the brain? |
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Definition
| Each eye transmits visual info to (the visual cortex) the occipital lobes of both hemispheres of the brain. info is processed contralaterally |
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| fast sweeping eye movements 25-100ms |
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| pauses in eye movement the eye takes in info during fixations |
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| short duration used to hold visual info. lasting 250-500ms. |
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used a tscope to rapidly present images to the eyes. whole report condition- asked them to free recall the letters.
partial report condition- played a tone and asked to recal the row of letters corresponding to that tone |
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Definition
| when a later visual stimulus affects perception of an earlier stimulus |
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| Feature detection-Selfridge pandimonium model |
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Definition
1. Data Demons encode pattern 2. Computational demons-one for each simple feature in pattern 3.Cognitive Deamons- One for each pattern 4. Decision Demons- decides which cognitive deamon is loudest. |
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| processing determined by the physical properties..bottom up |
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| Conceptually driven processing |
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| relies on content and contextual info and the individuals expectations. |
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