LH = [23 25 26 27]                                             
RH = [60 62 63 64]                                             
nb1 = (b1@RH + b2@LH)/2 label Average Contra Condition 1
nb2 = (b2@RH + b1@LH)/2 label Average Ipsi Condition 1             
nb3 = (b3@RH + b4@LH)/2 label Average Contra Condition 2
nb4 = (b4@RH + b3@LH)/2 label Average Ipsi Condition 2
nb5 = (b5@RH + b6@LH)/2 label Average Contra Condition 3
nb6 = (b6@RH + b5@LH)/2 label Average Ipsi Condition 3
nb7 = (b1@RH + b2@LH)/2 - (b2@RH + b1@LH)/2 label CDA Condition 1
nb8 = (b3@RH + b4@LH)/2 - (b4@RH + b3@LH)/2 label CDA Condition 2
nb9 = (b5@RH + b6@LH)/2 - (b6@RH + b5@LH)/2 label CDA Condition 3