Psy 123_Lec 15 Cognitive Control

Monitoring and error detection task switching

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Unformatted text preview: -Relevant Information! Monitoring and Error Detection! Task Switching! Inhibitory Control! Monitoring and Error Detection! anterior cingulate! Critical for monitoring for error detection. The conflict between our goal state (what we intend to do) and what we actually did, the ACC is very very active. The area of the PFC that is monitoring what we are doing, and monitoring our mistakes. It seems that the ACC is what sends a warning when we mess up (Oh Shit! Response). Seen in many ways -- flanking task (have to response to a target, whether it is an S or H, and on some trials it can be flanked by a bunch of Ss, in which case, the response is easy. In other cases flanked by a bunch of Hs, and when they happens can sometimes mess up your response). This is a measurement of galvanic skin response -- on the incorrect trials when you screw up, you get a profound signal and also see that in the brain as well in the posterior section of the ACC. (Same area as in the Stroop task). Mechanisms of Cognitive Control! Working Memory! Selection of Task-Relevant Information! Monitoring and Error Detection! Task Switching! Inhibitory Control! Task Switching! Wisconsin Card Sorting Task! Perseveration: the uncontrollable repetition of a particular response.! Importnat diagnostic task for PFC functioning. And one of the common tasks to assess whether they have damage to the PFC. Basically, the subject has a deck of cards and has to determine how to correctly categorize this deck of cards. And they do it by trial and error, and they guy standing behind you just tells you if you are right or wrong on that trial. At first it may be that she has to categorize by the # of objects on that card -- goes for a number of trials -then suddenly he switches it up w/o telling her -- suddenly she must figure out what the new rules are. It takes 1-2 trials to figure out what the new dimension is, and keep going, and maybe he will switch it up again. Neurologist is looking to see, does she understand that the rules have changed, how quickl...
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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.

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