Abstract: The mirror neuron system is an action observation-execution mechanism which plays an important role in many neurophysiologicalprocesses, such as action observation, action imitation, motor imagery and motor learning. It is an important neural mechanism of actionobservation therapy, motor imagery therapy, mirror therapy, virtual reality therapy and brain computer interface technology.

Key words: mirror neuron, action observation, motor imagery, imitation learning, mirror therapy, virtual reality, brain-computer interface, review