Using ANT-Neuro amplifier

pchaves · Post by **pchaves** » 26 Dec 2009, 18:56

Hi all,

We are trying to develop a simple experiment using BCI2000 with our avaliable material, an ANT-Neuro amplifier. Since there's no Data Acquisition Module for this amplifier, we were considering implementing one...now the thing is I believe this amplifiers are built by TMSi. Some libraries from the Neuro ANT SDK seem to point to this, and the amplifiers look exactly the same (as does the Brain Product's one)! If that's the truth then we can use the already existing TMSi module! Of course this theory needs testing, but does anyone have some experience with this material?

Thank you!

PS: by the way, I know it's Christmas, but I've sent an e-mail asking for the download form and got no answer, any chance I'll get my gift anytime soon?

Cort · Post by **Cort** » 24 Aug 2010, 16:28

This post is old, but in case anyone else is wondering, the TMSi source module does seem to work with ANT amplifiers as is.

gschalk · Post by **gschalk** » 25 Aug 2010, 05:58

Cort,

This is great to know. Thanks for sharing.

Gerv

karthiks · Post by **karthiks** » 27 Oct 2010, 10:18

Where can I find the source module? Do I have to compile BCI2000 for this or can I somehow plug this in the pre-compiled binary?

mellinger · Post by **mellinger** » 28 Oct 2010, 10:23

You don't need to compile BCI2000 yourself. Just download the extended BCI2000 distribution from
http://bci2000.org/downloads/bin/BCI2000Contrib.exe

Juergen

karthiks · Post by **karthiks** » 06 Dec 2010, 05:59

mellinger wrote:You don't need to compile BCI2000 yourself. Just download the extended BCI2000 distribution from
http://bci2000.org/downloads/bin/BCI2000Contrib.exe

Juergen

Hey,

I managed to get that working. Now to perform an experiment, I must modify the bat file to point to TMSi.exe which I have done. But, do I have to make any changes to the .prm file?

I tried running with the modification to bat file and the default Signalgenerator.prm file and got these error msgs -

06-Dec-10 11:49:36 - TMSiADC::Preflight: Number of elements in PhysicalChannels must match SourceCh.
06-Dec-10 11:49:36 - Warning: TMSiADC::Preflight: The amp driver says the gain of channel 1 is 0.0715 whereas the corresponding value in the SourceChGain parameter is 0.008.
06-Dec-10 11:49:36 - Warning: TMSiADC::Preflight: The amp driver says the gain of channel 2 is 0.0715 whereas the corresponding value in the SourceChGain parameter is 0.008.
06-Dec-10 11:49:36 - Warning: TMSiADC::Preflight: The amp driver says the gain of channel 3 is 0.0715 whereas the corresponding value in the SourceChGain parameter is 0.008.
06-Dec-10 11:49:36 - Warning: TMSiADC::Preflight: The amp driver says the gain of channel 4 is 0.0715 whereas the corresponding value in the SourceChGain parameter is 0.008.
06-Dec-10 11:49:36 - Warning: TMSiADC::Preflight: The amp driver says the gain of channel 5 is 0.0715 whereas the corresponding value in the SourceChGain parameter is 0.008.
06-Dec-10 11:49:36 - Warning: TMSiADC::Preflight: The amp driver says the gain of channel 6 is 0.0715 whereas the corresponding value in the SourceChGain parameter is 0.008.
06-Dec-10 11:49:36 - Warning: TMSiADC::Preflight: The amp driver says the gain of channel 7 is 0.0715 whereas the corresponding value in the SourceChGain parameter is 0.008.
06-Dec-10 11:49:36 - Warning: TMSiADC::Preflight: The amp driver says the gain of channel 8 is 0.0715 whereas the corresponding value in the SourceChGain parameter is 0.008.
06-Dec-10 11:49:36 - TMSiADC::Preflight: The SourceChGain values must match the hardware channel resolutions.

I kind of understand the first one - the amplifier has 128 + 9 channels. Do I have to edit the SourceChGain values if I want to use all 137 channels?

karthiks · Post by **karthiks** » 01 Feb 2011, 08:33

No replies?

gschalk · Post by **gschalk** » 01 Feb 2011, 08:44

Hi,

Yes, you have to adapt the SourceChGain values (you have to have as many entries as the number of channels in SourceCh; each entry has to be 0.0715, at least judging from the Preflight report).

Please also check the documentation on the TMSi module and the SourceChGain/Offset parameters on doc.bci2000.org.

Gerv

karthiks · Post by **karthiks** » 01 Feb 2011, 09:32

Hey Gerv,

Thank you.

So, I have to manually add 137 channels and then adjust the SourceChGain value for them? There is no automatic way in the driver or just a single place at which I can make this change?

Karthik

gschalk · Post by **gschalk** » 01 Feb 2011, 13:58

Hi,

You should only need to put in 137 values in SourceChGain and SourceChOffset.

Gerv

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