Vertical Synchronization is an option found in many games that allows the frame rate of the game to be matched to the refresh rate of the monitor. Generally, allowing VSync provides the greatest stability, but turning it off can allow for much higher frame rates. The downside of the greater speed is the potential for artifacts to develop.

A synchronizing pulse that is derived from (or accompanies) a video signal, and used to indicate to the monitor when it's time to move the electron beam to the upper left corner of the display to start the next field.

Synchronizing pulses used to define the end of one television field and the start of the next, occurring at a rate of approximately 59.94 Hz.

Pulses that define the end of one television field and the start of the next at a rate of 59.94Hz for NTSC color and 60Hz for black and white video.