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Unformatted text preview: y she switches to another dimensions. For a normal subject
(1-2 trials), but for someone with PFC damage it can be a difﬁcult task. They tend have
preseveration (stick to the original goal that they learned, and try to stick with the original
rules). Task Switching! Mechanisms of Cognitive Control!
Selection of Task-Relevant Information!
Monitoring and Error Detection!
Inhibitory Control! Inhibitory Control!
Stroop Task! Phineas Gage!
resisting temptation! Orbitofrontal Cortex! Important function of the PFC. We talked
about being able to regulate in an appropriate
way, the feeling that one is having. Its an
important function for reasoning, problem
solving, but for every aspect of our lives.
But also have to in a cognitive sense, when
focusing on a color must be able to inhibit
those words as well. See this in just about any
kind of task. One of the key regions is the
OBF, when people have damage to this, like
Phineas Gage, they can be really messed on
things like Stroop Task. Inhibitory Control!
A Model of Prefrontal Control during the Stroop Task! With no top-down prefrontal control, the word-reading
pathway is much stronger than the color pathway. This
leads to the inappropriate response of “green.”! While selection processes are biasing the color pathway,
inhibitory processes must also inhibit the word-reading
pathways in order to avoid saying “green.”! The OBF is trying to inhibit the word pathway -- so have to both bias via PFC and inhibit via OBF Miller & Cohen (2001)!...
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This note was uploaded on 01/18/2014 for the course PSY 123 taught by Professor Staff during the Fall '11 term at UCSB.
- Fall '11