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Functional Networks (Supramodal Cortex (Also known as ‘association cortex’…
Functional Networks
Supramodal Cortex
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Areas include the prefrontal cortex, the parietal cortex, and some temporal lobe areas.
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Cortical Networks
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modality specific - process info related to one type of input/output eg auditory, visual
thalamus - gateway to cortex - collection of nuclei - sensory info arrives here before entering cortex
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Primary Cortexes
Primary Visual Cortex
retina projects to LGN of thalamus #
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PVC is 1st cortical area to process visual info (V1) #
Retinotopic organisation - diff areas of the visual field are represented in discrete areas of the cortex
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Primary Motor Cortex
Unlike the sensory system, the primary motor cortex sends information out to the spinal cord
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When neurons are stimulated, different muscles groups on the ‘contralateral’ side are muscles groups on the ‘contralateral’ side are activated.
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Neuronal recordings during movement: ‘population’ activity is related to the direction of the movement
Brain machine interfaces
Neural Prosthetics: Understanding information processing in the primary motor cortex allows scientists to develop methods that translate directly into benefits for clinical populations
This technology allows the brain to interface directly with control technology and bypass damaged circuitry
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Unimodal Cortexes
Unimodal Visual Cortex
V2, V3, V4, V5 - selectively responsive to specific visual properties
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occipital, temporal and parietal lobes
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Unimodal Motor Cortex
Unlike sensory areas, unimodal motor areas sendtheir outputs to the primary motor cortex and spinal cord
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The premotor cortex consists of distinct cortical areas that receive inputs from the prefrontal cortex and send outputs to the primary motor cortex.
3 broad subregions: dorsal, ventral, medial
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