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<p class="MsoNormal">Hello Fieldtrip experts!<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am running a neurofeedback experiment. I am using BrainVision to record my signals, and MATLAB FIELDTRIP to provide the feedback using sounds. I am trying to connect BrainVision to MATLAB, but I keep having problems streaming the signals
in matlab.<i><o:p></o:p></i></p>
<p class="MsoNormal">This is what I have done:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">In one matlab session:<o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Courier New"">%% Add paths<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Courier New"">addpath('C:\Program Files\MATLAB\packages\fieldtrip-20190419');<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Courier New"">addpath('C:\Program Files\MATLAB\packages\RDA_Client_Matlab64');<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Courier New"">cd('C:\Program Files\MATLAB\packages\RDA_Client_Matlab64');<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Courier New"">%% Enable online tracking<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Courier New"">ft_defaults<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Courier New"">cfg = [];<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Courier New"">cfg.host = 'yantang-THINK'; % of computer running the recorder software (default = 'eeg002')<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Courier New"">cfg.port = 51244; % TCP port to connect to (default = 51244)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Courier New"">cfg.channel = ’all’; % see FT_CHANNELSELECTION (default = 'all')<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Courier New"">cfg.feedback = 'no'; % 'yes' or 'no' (default = 'no')<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Courier New"">cfg.target.datafile = 'buffer://localhost:1972'; % target destination for the data (default = 'buffer://localhost:1972')<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Courier New"">cfg.target.eventfile = 'buffer://localhost:1972'; % target destination for the events (default = 'buffer://localhost:1972')<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Courier New"">ft_realtime_brainampproxy(cfg)<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">And this is the output:<o:p></o:p></p>
<p class="MsoNormal">Loaded pnet MEX-file for the tcp/udp/ip-toolbox Compiled @ May 18 2012 09:12:16<o:p></o:p></p>
<p class="MsoNormal">Version 2.0.5 2003-09-16<o:p></o:p></p>
<p class="MsoNormal">Copyright (C) Peter Rydesäter, Sweden, et al. , 1998 - 2003<o:p></o:p></p>
<p class="MsoNormal">GNU General Public License, se license.txt for full license notis.<o:p></o:p></p>
<p class="MsoNormal">You are allowed to (dynamicaly) link this file with non-free code.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> <a href="http://www.rydesater.com">http://www.rydesater.com</a>
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">===============================================================================<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">connection establised with host 127.0.0.1 on port 51244<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">In another matlab session:<o:p></o:p></p>
<p class="MsoNormal">cfg = [];<o:p></o:p></p>
<p class="MsoNormal">cfg.blocksize = 1; % seconds<o:p></o:p></p>
<p class="MsoNormal">cfg.dataset = 'buffer://localhost:1972'; % where to read the data<o:p></o:p></p>
<p class="MsoNormal">ft_realtime_signalviewer(cfg)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">And this is the output:<br>
Warning: could not read header from buffer://localhost:1972, retrying in 1 second<o:p></o:p></p>
<p class="MsoNormal">Warning: could not read header from buffer://localhost:1972, retrying in 1 second<o:p></o:p></p>
<p class="MsoNormal">Warning: could not read header from buffer://localhost:1972, retrying in 1 second<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’m not sure why the signal is not going through. <o:p></o:p></p>
<p class="MsoNormal">Does anyone have any idea?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards,<br>
Winson<o:p></o:p></p>
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