As an action, you briefly stop the flow of time for everyone but yourself. You can take one additional turn, during which you can use actions and move as normal as long as nothing you do affects a creature other than you or an object being worn or carried by someone other than you. No time passes for other creatures.
Splintered or partitioned minds within your own mind, such as might be in effect through the use of spells such as schism, are not temporally sped up.
You can increase the number of turns by 1 for every other additional mana or psi expended.