Two EEGs plus AIB

[juank]

Hi,

I wanted to connect two EEG in daisy chain (I already did it in previous experiments) and the AIB. Can I do this? Which SPEEDMODE I have to use?

Thanks a lot!
Best,
Juan

[Coen]

You can do this with a bit improvisation:

EEG 1: sppedmode 0
EEG 2: speedmode 1
AIB: speedmode 2

You will then see the AIB channels in ActiView as monopolar (EEG) channel 1-32 of Box 3 (with the AIB tab-page greyed out). The AIB channels will be saved in the BDF file with channel labels 3-1, 3-2 etc. The only thing to watch our for is that the gain declared in the file header will be a factor 4 to high for the AIB channels (AIB has LSB = 125 nV, while the file header will declare LSB = 31.25 nV for all channels, both EEG and AIB).

Best regards, Coen (BioSemi)

[juank]

Thanks a lot! I'll try that!