Connectivity measures

CONN computes the following functional connectivity measures from your fMRI data:

Seed-based connectivity measures

  • Seed-Based Correlation (SBC)
  • Multivariate Seed-Based Connectivity (mSBC)
  • Weighted Seed-Based Connectivity (wSBC)
  • Generalized Psycho-Physiological Interaction (gPPI)


ROI-to-ROI connectivity measures

  • ROI-to-ROI Correlation (RRC)
  • Multivariate ROI-to-ROI Connectivity (mRRC)
  • Weighted ROI-to-ROI Connectivity (wRRC)
  • Generalized Psycho-Physiological Interaction (gPPI)


ROI-level (graph) network measures

  • Degree & Cost
  • Average minimum path distance
  • Clustering coefficient
  • Global efficiency
  • Local efficiency
  • Betweenness centrality


Voxel-level network measures

  • Intrinsic Connectivity (IC)
  • Global Correlation (GCOR)
  • Local Correlation (LCOR)
  • Multivariate Connectivity (MVPA)
  • Independent Component Analyses (ICA)
  • Principal Component Analyses (PCA)


Dynamic connectivity measures

  • Sliding window measures
  • Dynamic Independent Component Analyses (dyn-ICA)


Other measures

  • Amplitude of Low-Frequency Fluctuations (ALFF)
  • Fractional Amplitude of Low-Frequency Fluctuations (fALFF)