Disclosed herein is a method of treating a disease, comprising: (a) implanting an array of electrodes on one or more targeted nerves and/or targeted muscles; and (b) treating the disease by selectively stimulating the one or more targeted nerves and/or targeted muscles through electrical pulses delivered from the array. Also disclosed herein is a device, comprising a plurality of electrodes that have the capacity to be inserted in a facial nerve. Further disclosed herein is a method of treating facial paralysis and/or damage in a subject, comprising: (a) detecting the level of contraction of individual muscles on a healthy, non-paralyzed side of the face of the subject; and (b) treating facial paralysis by a direct targeted stimulation of the corresponding muscles or nerve fibers on a paralyzed side of the face of the subject. Also disclosed herein is a method of treating synkinesis, comprising: (a) implanting an array of electrodes on one or more targeted nerves and/or targeted muscles; and (b) selectively suppressing the one or more targeted nerves and/or targeted muscles through electrical pulses delivered from the array.