Force Choke is a dark side ability learnt that is use to crush a living being's throat or trachea, in effect choking or strangling them if used at a low level. Force Choke could also be used to apply physical force on the target's neck to allow a user to grip their target by the neck without physically touching them. The prerequisite of this ability is Force wound.
In Star Wars: Knights of the Old Republic, Force Choke constricts the throat of a target at range, stunning and inflicting 2/3rds of the attacking character's level in damage every 2 seconds for the duration (6) seconds. The target also suffers a temporary (24) second -4 penalty to Constitution, Dexterity and Strength. A successful Fortitude save at DC 5 + the attacking character's level + the attacking character's Wisdom and Charisma modifiers results in no effect. This power does not affect droids.
In Star Wars: The Old Republic, it chokes the target, stunning it for 4 seconds. Deals 1266 kinetic damage and builds 3 rage over the duration. This ability can be channeled while moving.