Processing sensor channels
Posted: Thu Oct 03, 2019 7:07 pm
Hello,
I have a few questions in interpreting aux sensor channels from a dataset with 16 aux channels, any advice is appreciated:
1) Is this still the correct way to process GSR signals https://www.biosemi.nl/forum/viewtopic. ... nsor#p2450
2) After scaling resp and pleth, are the units simply uV (no conversion to, for example, mm displacement in resp belt)
3) I'm having a hard time arriving at reasonable temperature values, is this an accurate translation of what happens in ActiView?
signal1 = double(Non_Inverting_Temp - Inverting_Temp) + 2*2^30
a = -1302781; b = 157168911; c = -3342225101;
signal2 = sqrt(4*a*signal1 + b^2 - 4*a*c)
signal3 = (signal2-b)/(2*a)
signal4 = int(signal3*1000)*256
signal5 = double(signal4)/8192*32/1000 (conversion from uV to degC)
Thanks,
Clement
I have a few questions in interpreting aux sensor channels from a dataset with 16 aux channels, any advice is appreciated:
1) Is this still the correct way to process GSR signals https://www.biosemi.nl/forum/viewtopic. ... nsor#p2450
2) After scaling resp and pleth, are the units simply uV (no conversion to, for example, mm displacement in resp belt)
3) I'm having a hard time arriving at reasonable temperature values, is this an accurate translation of what happens in ActiView?
signal1 = double(Non_Inverting_Temp - Inverting_Temp) + 2*2^30
a = -1302781; b = 157168911; c = -3342225101;
signal2 = sqrt(4*a*signal1 + b^2 - 4*a*c)
signal3 = (signal2-b)/(2*a)
signal4 = int(signal3*1000)*256
signal5 = double(signal4)/8192*32/1000 (conversion from uV to degC)
Thanks,
Clement