Neuro- signals are being widely used for clinical purpose to detect and diagnosis of mental disorders. Its uniqueness and consistent characteristics in human being made it feasible protocol identify the individual. In this paper we have investigated another cognitive process to identify an individual by that motor movement and imagination cognitive process would also be a eligible parameter to identify a person like others mental task, object recognition and listen audio etc. In order to it technically we have chosen a well-defined method for non-stationary signal analysis method called wavelet transform and neural network classifier. In conclusion we have received that motor imagination based cognitive task performed by subject has better applicability motor movement based cognitive task.