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Hi Coen, I wasn't able to get my hands on a resistor this afternoon, but instead I hooked up another lab member to the GSR electrodes and compared what Actiview was showing me with what the .bdf file is recording. When actiview was showing a value of 6500 nanosiemens, my bdf file gave the same value...

Hi Coen, Yes so this is what is making me think that the conversion is not quite correct. For one of my data files applying this conversion will give you the following values: 0.327120788 0.327234528 0.327570769 0.327817259 0.327959778 0.328092834 0.328210144 0.328242156 0.328274169 0.328317566 0.32...

Hi Coen,

Thanks for this, I've had a look at the information stored in the .bdf header, so what you've said makes much more sense to me!

Best wishes,

Sam

So the only conversion of the values should be GSR_Value/32000? Here is the same data with this conversion applied: Time (s) 0 0.04 0.08 0.12 0.16 0.2 0.24 0.28 0.32 0.36 0.4 0.44 0.970605469 0.970840638 0.971307372 0.971433716 0.971761781 0.972013488 0.972329528 0.972667969 0.972893678 0.973229859 ...

Hi Coen, Thanks for your response. When I apply this calculation I am getting values that are still quite large (see example of one participants data below), this general pattern of values in the hundreds appears to be consistent across all of my participants, which makes me think there is something...

Hi, I realise that this has been covered previously, but I am having trouble understanding what calculations are necessary to convert my GSR signals for analysis in other software. I collected my data using the 16 Hz GSR module as part of my ActiveTwo hardware. The software I will be using for analy...

Hi Coen,

This is really useful, thanks a lot for your help!

Best wishes,

Sam

Hi, I'm responding to this old post because we have had the exact same issue during data collection in our lab (high frequency noise in P2, almost certainly due to bridging between P2 and DRL). I'm just wondering whether this bridging introduces noise back into the entire electrode set (due to noise...

Hi, During EEG data collection, I will be presenting various sound stimuli to my participants. I'm looking for some suitable earphones that will not introduce any electrical noise into the recording. Has anyone else used earphones during EEG recordings, if so do you have any recommendations? I've co...