Sum Difference (Sum Diff) In simplest terms, I use Sum Difference when there is a strong differential in a group of frequencies between homologous sites and there are one or more frequency bands that show excessive activation. Training down the sum trains down the activity in both channels, training down difference reduces the asymmetry. You […]

TAG Sync (Theta Alpha Gamma Synchrony) Alpha, theta, and gamma synchrony are desired states, but a bit less than half the assessments I see already synchronize. It would be like training a cheerleader to jump up and down. The assessment will show your synchrony eyes-closed, eyes-open and at task between each site pair in theta, […]