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Common Regions of the Human Frontal Lobe Recruited by Diverse Cognitive Demands

Common Regions of the Human Frontal Lobe Recruited by Diverse Cognitive Demands. John Duncan and Adrian M. Owen. Frontal Lobe. Connectivity Modules? Frontal functions Network of prefrontal regions involved in diverse cognitive tasks. Cognitive Demands. Response conflict Novelty

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Common Regions of the Human Frontal Lobe Recruited by Diverse Cognitive Demands

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  1. Common Regions of the Human Frontal Lobe Recruited by Diverse Cognitive Demands John Duncan and Adrian M. Owen

  2. Frontal Lobe • Connectivity • Modules? • Frontal functions • Network of prefrontal regions involved in diverse cognitive tasks

  3. Cognitive Demands • Response conflict • Novelty • Working memory: number of elements • Working memory: delay • Perceptual difficulty

  4. Isolation of a Cental Bottleneck of Information Processing with Time-Resolved fMRI Paul E. Dux, Jason Ivanoff, Christopher L. Asplund, and René Marois

  5. Central Bottleneck • Central, amodal processing stage • Psychological refractory period • Time-resolved fMRI

  6. pLPFC • Coactivation by contrasting tasks • Serial postponement of activity

  7. Implications • SMFC as well as pLPFC • Correspond to mid-dorsolateral and anterior cingulate • Recall Duncan & Owen (2000) • Diverse cognitive functions, but limitations

  8. An Integrative Theory of Prefrontal Cortex Function Earl K. Miller and Jonathan D. Cohen

  9. PFC • Top-down control • Access to range of information • Multimodal • Maintain and update representations • Exert biasing signals to other regions • Plasticity

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