A fundamental problem a lot of this work has to confront is that interpreting motor behavior is generally the best way of interpreting brain activity.
The activity that's happening in the brain but never reaches the level of motor activity (in people that are not disabled and/or impaired in some way) is problematic to interpret as it is difficult to control and may not even be properly regarded as intentional.
The activity that's happening in the brain but never reaches the level of motor activity (in people that are not disabled and/or impaired in some way) is problematic to interpret as it is difficult to control and may not even be properly regarded as intentional.