10. A system for motor learning comprising: a brain-robot interface comprising a neural signal acquisition device for detecting a user's motor intent; a processing unit for obtaining a first score based on the detected motor intent, and for calculating a second score based on the first score and a threshold score value for the motor intent, the processing unit being configured for adjusting a threshold score value for the motor intent by extracting a value from a learning curve that maps a relative performance index to a relative target threshold value variation to quantify an amount of threshold score value adjustment; and a robotic device for giving robotic assistance to the user for executing a motor task associated with the motor intent; wherein the robotic device is configured for giving of the robotic assistance based on the second score.
16. The system as claimed in claim 10 , wherein the detector is configured for detecting of the user's motor intent asynchronously.