Reaction of Matter on Mind
<-(+) is advanced post-quantum SELF-reaction of future matter B on present mind Q* along past light cones (i.e, the + pole in the Feynman propagator).
<-(-) is the retarded post-quantum SELF-reaction of past matter B on present mind Q* along the future light cones (i.e, the - pole in the Feynman propagator).