Search found 4 matches

by cmuehl
Tue Feb 01, 2011 9:03 pm
Forum: BioSemi Hardware
Topic: GSR recording problem, gel choice, setup procedure
Replies: 1
Views: 6730

GSR recording problem, gel choice, setup procedure

Hi, Below, you find a description of the problem and my procedure. My question is twofold: 1. Might the extreme decrease of skin conductance be a result of using the wrong gel? I got it from a pharmacy according to a receipe from a seminal work on GSR measurement (I don't have the title at hand now)...
by cmuehl
Thu Feb 11, 2010 5:16 pm
Forum: BioSemi all other topics
Topic: Scaling of GSR data
Replies: 13
Views: 31860

Dear Coen, I believe that you mean 0.625 milliSiemens instead of microSiemens. You mention that the smallest unit that can be measured (as I underrstand this is the implication of the LSB) is 31.25 nanoSiemens (nS). In my understanding that makes 20000 units = 20000*31.25 nS = 625000 nS = 625 microS...
by cmuehl
Tue May 19, 2009 5:40 pm
Forum: BioSemi Hardware
Topic: Measuring with 2 different electrode sets
Replies: 2
Views: 6233

Thanks for the quick reply. I will try the two bucket test as you suggest.

Best regards,
Christian
by cmuehl
Thu May 14, 2009 9:03 am
Forum: BioSemi Hardware
Topic: Measuring with 2 different electrode sets
Replies: 2
Views: 6233

Measuring with 2 different electrode sets

Hi, We purchased a second 32 electrode set two years after we bought our old one. Using both to measure with 64 electrodes (in saline solution) results in 2 clearly distinguishable groups of electrode signals on the ActiveView screen. The impression is that the amplitudes are larger for the new set....