maria laura

marialaura · Post by **marialaura** » Wed Apr 23, 2008 8:47 pm

Hi everybody!

I'm an Italian PhD student, who are trying to use Biosemi MK2 for the first time.
I'd like to ask the comunity two questions:

1) Is it possible to use Biosemi for EEG recordings during arm or feet movement? I'm interested to study what happen in the brain when the subject is performing a motor task (e.x. shoulder-elbow movement).
In this situation could Biosemi record a stable and reliable signal?

2) Could I use EX1-EX2 as reference electrodes? I didn't understand well why the pin-electrodes and the flat electrodes have a different input to connect to A/D box. Why the second ones goes in the touchproof connection?

Thanksss to all!

Post by **Coen** » Thu Apr 24, 2008 5:37 pm

It is certainly possible to use the BioSemi system during arm and leg movements. Just be careful that the cap does not shift on the head (this will lead to movement artifacts).

Any of the electrodes, or combination of the electrodes can be used as a reference, see http://www.biosemi.com/faq/cms&drl.htm

Best regards, Coen (BioSemi)