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

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Presentation on theme: "Common Regions of the Human Frontal Lobe Recruited by Diverse Cognitive Demands John Duncan and Adrian M. Owen."— Presentation transcript:

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

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

6 Central Bottleneck Central, amodal processing stage Psychological refractory period Time-resolved fMRI

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8 pLPFC Coactivation by contrasting tasks Serial postponement of activity

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

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

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12 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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