TABLE 2. Classification of Movements According to the Subjective Perception of Will.

Voluntary	Involuntary	Unvoluntary
An action is voluntary when it is consciously performed, is flexible, and can be controlled. The perceptual information is used to guide goal-oriented behavior.	An action is involuntary when it is automatically performed and is inflexible. It is usually faster than a voluntary action. It cannot be controlled, because it is mechanically triggered by specific perceptual stimuli.	An action is unvoluntary when it is perceived as a voluntary response to an uncontrolled and involuntary urge to move.