For speech perception, the theory asserts that the objects of perception are actual vocal tract movements, or gestures, and not abstract phonemes or (as in the Motor Theory) events that are causally antecedent to these movements, i.e. intended gestures.
For speech perception, the theory suggests that perceived entities are actual vocal tract movements, or gestures, instead of abstract phonemes or (as per the Motor Theory) preceding causative events that align with these movements, i.e., intended gestures.