Psionics in the natural ability to manipulate space-time. This is achieved through nodes of Primordium embedded in the nervous system. In Humans (As of the Moment) they must also have the Kaiden's Lobe in the brain. This allows the person to control the nodes almost unconsciously, as easy as one would move a limb. Although most use of psionics use physical mnemonics.
Most Psionics have access to all of the branches of Boyce space-time effect.