Ex parte ALTSCHULER et al. - Page 2

          Appeal No. 96-2635                                                          
          Application 07/993,050                                                      

                                 DECISION ON APPEAL                                   
                    This is a decision on appeal from the examiner's final            
          rejection of claims 1 through 5, 7 through 17, 21 and 22, which             
          are all of the claims remaining in this application.  Claims 6              
          and 18 through 20 have been canceled.                                       

                    Appellants' invention relates to a method of producing            
          a communication or control signal using the mu wave from the                
          brain of a person.  As noted on page 5 of the specification,                
                    [t]he invention detects brain waves, i.e.                         
                    electroencephalogram (EEG) signals, to deter-                     
                    mine whether a person is a) moving or                             
                    thinking about moving, or b) not moving and                       
                    not thinking about moving.  A pair of                             
                    electrodes are placed over the motor cortex                       
                    on the central region of the scalp on                             
                    opposite sides of the head.  The EEG machine                      
                    records the potential difference between                          
                    these two electrodes.  When a person is                           
                    resting, i.e., not moving and not thinking                        
                    about moving, there is a large wave, known as                     
                    the mu wave, present typically in the 8-13 Hz                     
                    region.  When the person moves, or thinks                         
                    about moving, a suitable body part[,] the                         
                    wave substantially decreases.  Thus the                           
                    system operates on the basis of mu wave                           
                    attenuation caused by actual movement or                          
                    movement rehearsal (thinking of moving).                          
                    Digital signal processing of the EEG wave is                      
                    used to produce a control signal, which can                       
                    be used to communicate or actuate various                         


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