[FieldTrip] Need help in real time EEG

[Robert Oostenveld]

Dear Faraz,

For a brainamp I would recommend the rda2ft.exe application instead of the matlab-based ft_realtime_brainampproxy implementation. This page has more details: http://fieldtrip.fcdonders.nl/development/realtime/rda

Furthermore, I suggest you work your way through the specific getting started section at http://fieldtrip.fcdonders.nl/getting_started/realtime, starting from a simulated data stream and simlply visualizing the data, before you move on to realtime EEG and more serious analyses.

best regards,
Robert
 


On 16 Nov 2011, at 4:52, Faraz Akram wrote:

> Dear Marianne
> 
> Thanks for your reply.
> 
> Yes i started fieldtrip buffer by "ft_realtime_brainampproxy(cfg)", it starts writing EEG data to buffer.
> Now i dont know exactly how to read that buffer.
> 
> I think there will be no difference in reading from buffer due to difference of amplifier
> Kindly Guide me how you access data from buffer.
> 
> Thanks
> 
> Regards
> Faraz Akram
> 
> 
> On Mon, Nov 14, 2011 at 8:00 PM, <fieldtrip-request at donders.ru.nl> wrote:
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>   1. Re: Need help in real time EEG (Severens, Marianne)
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> ----------------------------------------------------------------------
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> Message: 1
> Date: Mon, 14 Nov 2011 11:16:10 +0100
> From: "Severens, Marianne" <m.severens at maartenskliniek.nl>
> To: Email discussion list for the FieldTrip project
>        <fieldtrip at donders.ru.nl>
> Subject: Re: [FieldTrip] Need help in real time EEG
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>        <70FC3ACFFB46314EBEAF9101EA45F50E06D145F2FF at smkexch02.maartenskliniek.nl>
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> Content-Type: text/plain; charset="us-ascii"
> 
> Hi Faram
> 
> I have a different amplifier, so I'm not sure if it works exactly the same, but I can try to help you.
> 
> Did you first start the fieldtrip buffer that 'reads' the data from the amplifier? You can look up which one you have to use for your amplifier here: http://fieldtrip.fcdonders.nl/development/realtime
> 
> Best, Marianne
> 
> ________________________________________
> From: fieldtrip-bounces at donders.ru.nl [fieldtrip-bounces at donders.ru.nl] On Behalf Of Faraz Akram [farsun at gmail.com]
> Sent: Monday, November 14, 2011 3:56 AM
> To: fieldtrip at donders.ru.nl
> Subject: [FieldTrip] Need help in real time EEG
> 
> Hi
> 
> I am new to FieldTrip.
> 
> I want to acess realtime EEG data in matlab from my BrainVision recorder.
> when i use
> 
> 
> 
> hdr    = ft_read_header('buffer://localhost:51244')
> 
>  it gives an error
> 
> Trying to close socket 3956
> ??? Error using ==> buffer
> ERROR: tcp connection to buffer failed.
> 
> Error in ==> ft_read_header at 815
>      orig = buffer('get_hdr', [], host, port);
> 
> 
> 
> Kindly Guide me what will i have to do
> 
> 
> 
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