I use Graded Motor Imagery commonly for a range of painful conditions including CRPS. In essence, GMI is brain training that targets mechanisms that we know are involved in ongoing pain states. Here is David Butler talking about GMI, mirrors and neuroscience.

 
Part 1

Part 2

Part 3

Part 4

Mirror Therapy

Neurodynamics and neuroscience

For more information about treatment of CRPS and other chronic and complex pain states, visit www.specialistpainphysio.com