BioSemi.nl

Hi All,

I have collected eeg with ActiveTwo for around 20 participants. All offsets are either positive or negative with approximately equal amount. But today, I found something unusual that is almost all offsets are negative, cf. the attachment. Is that usual?

Best,
Atthaphon

Hi All,

Is it advisable to soak an electrode in salt water from time to time to keep it functioning?

Best, Atthaphon

Hi All, What I understood is that I should get the offset to be between +-20 mV to have a good quality signal. But I observed differently: see cp2, p2, and po4 in the attached figure. All three locations have stable offsets within the range but the corresponding signals are bad. Could somebody pleas...

Hi All,

A paper sheet from Biosemi recommends Elefix over Signal gel for GSR. May I know what could be a reason? Is it just only that Elefix provides better placement of GSR? Can I replace Elefix with Ten20?

Best,
Atthaphon Viriyopase

I am about also to buy the same equipment. My questions might add some useful information to this topic. 1) In your website (https://www.biosemi.com/faq/prices.htm), you mentioned that the base system includes active electrodes. Are they Flat-Type Active-electrodes? How many of them will be included...