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11 Cards in this Set
- Front
- Back
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prefrontal cortex - what kind of cortex is it (hetero/idiotipic, etc)
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heteromodal, tertiary association cortices. premotor is unimodal homotypic (secondary), and the motor is idiotypic (primary).
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how is the prefrontal cortex divided? where is broca's area?
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the superior, middle, and inferior frontal gyri.
note that the inferior is divided into the pars opercularis, pars triangularis, and pars orbitalis. that's anatomically. functionally, divided into the dorsolateral and orbitofrontal areas. also the mesial frontal. broca's area is inside the pars opercularis and the posterior part of the pars triangularis. |
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what's the importance of the frontal lobes?
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starting the maintaining goal-directed behavior, especially long-term goals.
modulating emotions planning, considering impacts real-time problem solving, changing situation adaptation. selective attention - deciding priorities based on many different inputs. |
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how do problems with attention manifest?
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loss of mental sets, given a task they get bored of the rules and continue doing repetative behaviors, etc. also can get serious neglect - as in see a large clock face and see a complete clock, but all off to one side (not using one whole side of the available space).
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how can disinhibition be broken down?
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into behavioral, motor, and cognative.
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talk about cognative disinhibition - how can you diagnose it? what about motor disinhbition?
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stroop test. this is the colors written out but in the wrong way.
if i raise one finger, you raise one. then switch the rules, they fail to adapt. also fail to initiate stop code to tests - just keep doing the right thing forever. stimulus bound. motor disinhibition is done with the m n m n m n test. |
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what about planning and strategy problems? how do you diagnose?
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the goose, sack of corn, and fox problem. see issues with solving new-type problems that fall outside old skillsets. also see with clocks - they hit 12 long before they get around the whole outside.
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how about self-monitoring problems?
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ask how many people in chicago - they say 5 million. ask how many in the US, say 2 million, and don't realize the problem.
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what are our dementias associated with the frontal cortex?
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SDAT (senile dementia, ALZHEIMER's type) - this is seen as posterior like dementia. they're not generally disinhibited early on, more language comprehension problems and visual-spatial problems in the early stages. empty speech (like wernike's)
FTD - frontal temporal dementia. Pick's disease. FTD and picks' are all about frontal lobe type of behaviors in the early stages. disinhibition, problem solving, behavior problems. their visual spatial association (posterior) areas are fine. |
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labotamy - what were the effects, what was good and what wasn't helped?
what is psychosurgery still used for? |
very limited success with schitzophrenia.
did help with severe anxiety and depression. came out "blunted", easier to manage, withdrawn. NON INDUSTRIOUS, some surguries still done for OCD |
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what are the different kinds of inhibition and how do we test for them?
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cognative and motor.
cognative is easy to test - stroop test, finger game. motor easy too - the m n m n game. |
