Feedback represents using pain as a means of psionic grounding and it can be used to power feedback abilities.
Characters that have the feedback resource will gain feedback in proportion to any damage received. The base conversion rate depends on character level: it starts at 50% at level 1, and decays to 20% at level 50. Feedback is used by the Solipsist's Feedback and Discharge talent trees. It decays at the rate of 10% or 1 per turn (whichever is greater). Feedback is doubly affected by fatigue.