In order to realize the brain-computer interface(BCI) system,features of motor imagery EEG(electroencephalogram) were extracted and classified.First,the motor imagery EEG signals sampled from the C3 and C4 position of the brain were divided into four segments.Next,six-order AR parameter model was used for power spectrum estimation of each segmentation EEG and the summation of power spectrum was calculated to construct the feature vector.Then,the error back propagation algorithm was utilized to classify the ...