 with mild slowing of the proximal conduction velocity across the knee.  The right tibial motor response showed a reduced amplitude with prolongation of the distal latency.  The left common peroneal response recorded from the EDB showed a decreased amplitude with mild distal slowing.  The left tibial motor response showed a decreased amplitude with a borderline normal distal latency.  The minimum F-wave latencies were normal with the exception of a mild prolongation of the ulnar F-wave latency, and the tibial F-wave latency as indicated above.  With repetitive nerve stimulation, there was no significant decrement noted in either the right nasalis or the right trapezius muscles.  Concentric needle EMG studies were performed in the right lower extremity, right upper extremity, thoracic paraspinals, and in the tongue.  There was evidence of increased insertional activity in the right tibialis anterior muscle, with evidence of fasciculations noted in several lower and upper extremity muscles and in the tongue.  In addition, there was evidence of increased amplitude, long duration and polyphasic motor units with a decreased recruitment noted in most muscles tested as indicated in the table above.