reference without EEG
Posted: Tue Jun 05, 2012 4:51 pm
Hi,
I have a question concerning the reference: I exclusively record EMG (zygomaticus Ex1+2, corrugator Ex3+4), GSR, Plet and Respiration.
For analyzing the data, do I have to build the difference between Ex1 and 2, and accordingly, between Ex3 and 4 in order to get a bipolar EMG signal? Additionally, we have large pulse artefacts here. Is it due to the position of the CMS?
And how is the GSR signal referenced?
Are all signals already rectified and integrated?
Best regards,
Katrin
I have a question concerning the reference: I exclusively record EMG (zygomaticus Ex1+2, corrugator Ex3+4), GSR, Plet and Respiration.
For analyzing the data, do I have to build the difference between Ex1 and 2, and accordingly, between Ex3 and 4 in order to get a bipolar EMG signal? Additionally, we have large pulse artefacts here. Is it due to the position of the CMS?
And how is the GSR signal referenced?
Are all signals already rectified and integrated?
Best regards,
Katrin