Premotor area + supplementary motor area, primary motor cortex
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Where is the prefrontal cortex?
At the front
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What is the main role of the primary motor cortex?
control for voluntary movement
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What is the organisation into somatotopic map similar to?
somatropic map in the somatosensory cortex
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How and who discovered it?
Dr penfield, stimulation of different areas induced by different movement
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What are the inputs?
from somatosensory cortex, from the premotor and supplementary motor areas (motor planning)
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What are the outputs?
Somatosensory cortex, to spinal cord(directly via the cortico-spinal tract or via brain stream --> muscle execution
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What are premotor area/supplementary motor areas?
planning complex movement sequences and selection of appropriate actions
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What is the experiment to find this?
One of the rectangles will light up and indicate which button to press, but only press when the button lights up wait until the button lights up before pressing
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What does this lead to?
Premotor supplementation --> motor activation, primary motor activation
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What are the main roles of the prefrontal cortex?
We have sensory areas that allow us to have sophisticated view of the world, we have motor areas that allow us to have a large repertoire of actions
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If all was to work automatically what would happen?
Chaos
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What happens in the prefrontal cortex?
rich information that we perceive and the number of options for behaviour require attention, decision making and coordination
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Why?
To make our behaviour fit our goals
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Why is it well placed?
to control our brain areas, well connected to all sensory and motor areas and to subcortical areas, exerts a top down influence onto those areas
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What is the goal of the top down influence?
select task relevant processing, suppress task irrelevant processing --> start watching a movie because you saw it on the table
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What are the main roles of the prefrontal cortex?
Cognitive control including, controlled attention, working memory, problem solving
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How do you control attention?
Stroop test, Attention has to be controlled to focus on the ink and ignore the word -->inhibition
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What happens to patients with frontal lobe damage?
cannot ignore the word, they read the word instead of naming the ink colour
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What happens to working memory?
Press a button if the letter you see is the samae as the one you saw two colours before
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What happened to short term storage?
active manipulation of the information held in memory
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What is planning?
moving objects in few moves possible
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What is emotiona and decision making?
IOWA gambling task
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What is language impairment?
Expressive aphasia and receptive aphasia
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What is expressive aphasia?
Production deficit and no fluent
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What is receptive aphasia?
Comprehensive deficit and fluent
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What is movement control?
Simple action (holding a glass and adjusting finger pressume while holding
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What is toward the back of the frontal corteX?
More sophisticated somatosensory intergration
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What is movement control?
Even more complex action, goal setting, what to look for, spatial processing and object recognition
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What does attention recruit?
systematically a fronto parietal network
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For example?
goal setting and attraction to salient objects, spatial processing
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How can frontal areas be bias attantion?
To task reluctant stimuli
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What is controlled/reflexive attention?
Target pops out, controlled attention needed
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Other cards in this set
Card 2
Front
Where is the lateral sulcus?
Back
Boundary with the temporal lobes
Card 3
Front
What is the motor cortex?
Back
Card 4
Front
Where is the prefrontal cortex?
Back
Card 5
Front
What is the main role of the primary motor cortex?
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