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Towards a Coherent View of Brain Connectivity

STS Instructor Authored by Thomas Collura

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Check out this Knowledge Base article from StressTherapy Solutions: Towards a Coherent View of Brain Connectivity.

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Study at a glance

Area
QEEG, Methods & Mechanisms
Authors
Collura TF
Journal
Journal of Neurotherapy
Year
2008
Protocol
EEG connectivity metrics (coherence, phase, synchrony, correlation, comodulation)

Key findings

  • Explains the difference between local activation and long-distance synchrony in the EEG
  • Compares coherence, phase, synchrony, correlation and comodulation side by side
  • Each measure picks up a different aspect of connectivity, so the choice matters for assessment and training
  • Concludes that connectivity can be both assessed and trained when suitable metrics and displays are used

DOI 10.1080/10874200802433274 →

A methods article on how the EEG can be used to measure how well different brain regions work together, and how those measures might be used in neurofeedback. It distinguishes activity that is local to one site from activity shared between sites, then walks through the main connectivity measures (coherence, phase, synchrony, correlation and comodulation). Each measure is compared for what aspect of connectivity it captures and how suitable it is for training, using worked examples on sample EEG data.