PSYC 741 Lecture Notes - Lecture 13: Premotor Cortex, Basal Ganglia, Perseveration
Document Summary
Executive functions control and manage other cognitive functions. Cognitive control: rule selection based on context. Basically the whole frontal cortex: dorsolateral prefrontal cortex, ventrolateral prefrontal cortex, ventromedial prefrontal cortex, orbitofrontal cortex, dorsomedial prefrontal cortex. Cue indicates which rule to use: if you get juice, you should use matching rule, if you get a high tone, you should use the nonmatching rule. In the lateral prefrontal cortex: there is more firing in situations where the matching rule is used. Conclusion: lpfc neurons indicating rule for upcoming choice point. Rules are a distributed set of neurons whose relative activity (firing rate) depend on the current context. Maps specific stimulus to a specific response. The prefrontal cortex projects to the basal ganglia and the cortical motor systems, which work together to initiate and/or inhibit actions. Whenever deviant stimulus is displayed (odd beep, different color, etc. ) In oddballs, gigantic erp potentiation spike: no spike seen in standards.
