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Dear Coen, thanks for your fast reply. Yes, I did use the unreferenced signal. I thought, that if I reference the data, I would increase the correlation, as I add (or better said substract) a common component to the data. Of course in the raw data there is the CMS/DRL as the common component. But I ...

Hi to all, A few weeks ago I decided to test the functionality of my electrodes, by doing the recomended measuring in salty water. The data looked fine and everything seemed ok. Then I noticed, that there is a higher correleation between the data for higher sample frequencies. e.g.: mean of correlat...

Thanks for these answers

Dear Coen I did some test measurements do learn more about the triggers, and I noticed the following: First of all it is possible to send external triggers and function key triggers simultaneously without soldering. I always tried the function keys without the trigger cable connected - and then it w...

Dear Coen, I'm sorry, but after reading lots of forum entrys and the relevant webpages on your website I still do not understand how it is realisable to send external triggers and function key triggers simultaneously. [quote="Coen"]Make sure that the trigger inputs 9-16 are pulled low at the trigger...

Hi Coen is it possible to explain how you computed the filter graph shown on the webpage http://www.biosemi.com/faq/adjust_filter.htm (of course not in detail) What unfilterd Powerspectrum-behavior of the EEG-data did you assume? 1/f-noise? I'm just asking beause I don't recieve the same filter beha...

Hi Coen. Thanks a lot for the fast reply and your help. As I just changed the sample rate for my measurements (measured the participant for about 1 minute, then switched off the A/D box, changed the sample rate, restarted and measured again with the new sample rate at exactly the same conditions) it...

[quote="Coen"]...Consequently, the CM voltage is reduced by the open-loop gain of the DRL circuit. ... the open-loop gain of the DRL driver decreases with frequency[/quote] Dear Coen, can I understand this in the way, that for high sample rates the interferences aren't reduced as much as for low sam...