This ability is only used in Path of the Furon, it is the ability to temporarily freeze time. When time is stopped, Crypto can't use mental abilities or fire any weapons when it's in effect, except the Ion Detonator, which was modified by Pox to perform said function.
As the game progresses, Crypto will be able to use PK Hold while time is stopped, and eventually, PK Throw. Using PK Throw when time is stopped is the key to using the Temporal Fist. This ability does more damage than the standard PK Throw.