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Q733 Colloquium

Colloquia occur: Selected Mondays at 4:00 pm - 5:00 pm - Room PY 101.
Colloquia titles will be posted as they become available.

Organizer: Rob Goldstone
Phone: 855-4853
Email: rgoldsto@indiana.edu

Fall 2014 Q733 Colloquia

  • Sep 8, 2014 - Danielle Bassett, University of Pennsylvania
  • Sep 15, 2014 - Thomas Serre, Brown University
  • Sep 29, 2014 - Uri Hasson, Princeton University
  • Oct 13, 2014 - Todd Braver, Washington University
  • Nov 3, 2014 - Yael Niv, Princeton University
  • Dec 1, 2014 - Daphne Maurer, McMaster University
  • Dec 8, 2014 - Matthew Botvinick, Princeton University

Abstract

Sep 8, 2014: Danielle Bassett, University of Pennsylvania
Title: Q733 Colloquium
Abstract: Human learning is a complex phenomenon requiring network-wide flexibility to adapt existing brain function and precision in selecting new neurophysiological activities to drive desired behavior. Using functional connectivity measurements of brain activity acquired from initial training through mastery of a simple motor skill, we investigate the properties of brain network dynamics that predict individual differences in learning. Functional interactions between brain regions co-evolve with one another during learning in distributed patterns that decrease in size with practice, indicating the emergence of an autonomous subgraph whose dynamics no longer depends on other parts of the network. This consolidation of network dynamics is mirrored in higher-level summary statistics describing the modular organization of the brain, a property that plays a critical role in the selective adaptability present during evolution, development, and optimal network function. Our results indicate that more flexibility during early practice sessions, which we measure by the allegiance of nodes to modules, predicts more extensive learning in later practice sessions. Flexibility is greatest in a periphery of high-level processing regions whose connectivity changes frequently, and is least in a relatively stiff core of output regions whose connectivity changes little in time. The temporal core-periphery structure of human brain dynamics provides a fundamental new approach for understanding how separable functional modules are linked. This, in turn, enables the prediction of fundamental capacities, including the production of complex goal-directed behavior, in humans.

Sep 15, 2014: Thomas Serre, Brown University
Title: Q733 Colloquium
Abstract:

Sep 29, 2014: Uri Hasson, Princeton University
Title: Q733 Colloquium
Abstract:

Oct 13, 2014: Todd Braver, Washington University
Title: Q733 Colloquium
Abstract:

Nov 3, 2014: Yael Niv, Princeton University
Title: Q733 Colloquium
Abstract:

Dec 1, 2014: Daphne Maurer, McMaster University
Title: Q733 Colloquium
Abstract:

Dec 8, 2014: Matthew Botvinick, Princeton University
Title: Q733 Colloquium
Abstract:


Previous Q733 Colloquia