Get ABR activity
Posted: Mon Mar 20, 2023 10:41 pm
Hello,
I am recording ABRs in infants using the Biosemi ABR cord (right and left mastoids + Ref electrode). I found, in another topic, that to obtain the ABR activity referenced to linked mastoids, I need to use the following formula: {(LA-Ref)+(RA-Ref)}/-2 = Ref - {(LA+RA)/2}
Thus, to obtain the ABR signal through time on Matlab, I computed : abr_signal = (EEG.data('Left') + EEG.data('Right'))/-2
I wanted to make sure that this transformation of the formula was correct. Can you please tell me if this is right ?
Thank you,
Estelle
I am recording ABRs in infants using the Biosemi ABR cord (right and left mastoids + Ref electrode). I found, in another topic, that to obtain the ABR activity referenced to linked mastoids, I need to use the following formula: {(LA-Ref)+(RA-Ref)}/-2 = Ref - {(LA+RA)/2}
Thus, to obtain the ABR signal through time on Matlab, I computed : abr_signal = (EEG.data('Left') + EEG.data('Right'))/-2
I wanted to make sure that this transformation of the formula was correct. Can you please tell me if this is right ?
Thank you,
Estelle