Here are some places where you can look for information about Population Averaged Diffusion MRI (DTI, NODDI) and Resting State FMRI (HRF):

Trackers
  1. Bugs: Bug Tracking System
  2. Support: Tech Support Tracking System
  3. Patches: Patch Tracking System
  4. Feature Requests: Feature Request Tracking System
Wiki
Population Averaged Diffusion MRI (DTI, NODDI) and Resting State FMRI (HRF) has a wiki that can be found here.