Get ABR activity

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estelleherve
Posts: 1
Joined: Mon Mar 20, 2023 3:23 pm

Get ABR activity

Post by estelleherve »

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

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