Subgraphs of functional brain networks identify dynamical constraints of cognitive control

Ankit N. Khambhati, John D. Medaglia, Elisabeth A. Karuza, Sharon L. Thompson-Schill, Danielle S. Bassett

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Brain anatomy and physiology support the human ability to navigate a complex space of perceptions and actions. To maneuver across an ever-changing landscape of mental states, the brain invokes cognitive control—a set of dynamic processes that engage and disengage different groups of brain regions to modulate attention, switch between tasks, and inhibit prepotent responses. Current theory posits that correlated and anticorrelated brain activity may signify cooperative and competitive interactions between brain areas that subserve adaptive behavior. In this study, we use a quantitative approach to identify distinct topological motifs of functional interactions and examine how their expression relates to cognitive control processes and behavior. In particular, we acquire fMRI BOLD signal in twenty-eight healthy subjects as they perform two cognitive control tasks—a Stroop interference task and a local-global perception switching task using Navon figures—each with low and high cognitive control demand conditions. Based on these data, we construct dynamic functional brain networks and use a parts-based, network decomposition technique called non-negative matrix factorization to identify putative cognitive control subgraphs whose temporal expression captures distributed network structures involved in different phases of cooperative and competitive control processes. Our results demonstrate that temporal expression of the subgraphs fluctuate alongside changes in cognitive demand and are associated with individual differences in task performance. These findings offer insight into how coordinated changes in the cooperative and competitive roles of cognitive systems map trajectories between cognitively demanding brain states.

Original languageEnglish (US)
Article numbere1006234
JournalPLoS computational biology
Volume14
Issue number7
DOIs
StatePublished - Jul 2018

Fingerprint

brain
Subgraph
Brain
cooperatives
process control
Process Control
Space Perception
Cognitive systems
Cognitive Systems
Adaptive Behavior
Non-negative Matrix Factorization
Behavior Control
Aptitude
Individual Differences
Functional Magnetic Resonance Imaging
Distributed Networks
Psychological Adaptation
Decomposition Techniques
Physiology
Task Performance and Analysis

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Modeling and Simulation
  • Ecology
  • Molecular Biology
  • Genetics
  • Cellular and Molecular Neuroscience
  • Computational Theory and Mathematics

Cite this

Khambhati, Ankit N. ; Medaglia, John D. ; Karuza, Elisabeth A. ; Thompson-Schill, Sharon L. ; Bassett, Danielle S. / Subgraphs of functional brain networks identify dynamical constraints of cognitive control. In: PLoS computational biology. 2018 ; Vol. 14, No. 7.
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Subgraphs of functional brain networks identify dynamical constraints of cognitive control. / Khambhati, Ankit N.; Medaglia, John D.; Karuza, Elisabeth A.; Thompson-Schill, Sharon L.; Bassett, Danielle S.

In: PLoS computational biology, Vol. 14, No. 7, e1006234, 07.2018.

Research output: Contribution to journalArticle

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