Psy 123_Lec 15 Cognitive Control

Overlaps w motor cortex as well medial prefrontal

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Unformatted text preview: s w/ motor cortex as well medial prefrontal! Wraps around corpus collusum anterior cingulate! The PFC is a huge area in the human brain. And it is broken up into functional distinct areas.Important b/c underlying different executive functions The Evolution of the Prefrontal Cortex! motor cortex! prefrontal cortex! Tiny PFC! Cats are dumb little animals with tiny little prefrontal cortexes. Huge expansion of PFC in human brain; more than any other area. V1 is comparatively smaller than other species, other areas are comparable. A Model of Cognitive Control in the Prefrontal Cortex! “Schematic diagram of some of the extrinsic and intrinsic connections of the prefrontal cortex. The partial convergence of inputs from many brain systems and internal connections of the prefrontal cortex (PFC) may allow it to play a central role in the synthesis of diverse information needed for complex behavior. Most connections are reciprocal; the exceptions are indicated by arrows.” ! Miller & Cohen (2001) An integrative theory of prefrontal cortex function. Annual Review of Neuroscience.! Mechanisms of Cognitive Control! Working Memory! Selection of Task-Relevant Information! Monitoring and Error Detection! Task Switching! Inhibitory Control! Working Memory! Single cell recordings from monkeys in the dorsolateral prefrontal cortex during the delay period of a working memory task.! cue! delay! response! Keep info on online, short-term. Keep info online when you need it, but when you don't it goes away. Working memory task is a typical design in animal studies. Monkey must keep in mind where they the food was. Associative memory task is very different -- Monkey has to learn that the food is associated with a symbol. May require another task in the in the delay period, and the monkey just has to be able to recall that the food is going to associated with that object. The monkey doesn't have to keep in mind where the food is because they've already built that association in their long-term memory between the food and that cue. Associative...
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