[Homer-users] (no subject)

[Chiu, Bryan (PHTH)]

Hi,

I've noticed I don't get the error on the tapTest data, but I do get the error on my data that I've created. One thing I notice is that the hemoglobin concentration is greater in the reference channel than it is in the channels that reach the brain.

Two considerations:
1) Does that mean I am not seeing any of the hemoglobin activity in the brain since the signal looks VERY much like the reference channel but weaker?
2) Does the error stem from the fact that the reference channel has a stronger signal (and as a result a higher concentration) than a channel that reaches the brain?

Let me know what you think.

- Bryan
________________________________
From: homer-users-bounces at nmr.mgh.harvard.edu [homer-users-bounces at nmr.mgh.harvard.edu] on behalf of Chiu, Bryan (PHTH) [bryan.chiu at ubc.ca]
Sent: Tuesday, August 19, 2014 10:15 AM
To: homer-users at nmr.mgh.harvard.edu
Subject: [Homer-users] (no subject)

Hi,

I am currently working with HOMER2 and trying to remove hemoglobin signal as a result of scalp interference via short separation (reference channels). I wanted to emulate the finger tapping task from the tutorial data and I come across this error when trying to ''run''. What is the workaround for this?

"Error while evaluating uicontrol Callback

Index exceeds matrix dimensions.

Error in hmrDeconvTB_SS3rd (line 71)
    rho = sum((ones(length(lstSS),1)*posM(iML,:) - posM(lstSS,:)).^2,2).^0.5;

Error in EasyNIRS_Process (line 88)
        eval( fcall );

Error in EasyNIRS>runNIRSsignalProcess (line 1024)
[procResult procInput err] = EasyNIRS_Process(hmr);

Error in EasyNIRS>popupmenuNIRSsignalProcess_Callback (line 1437)
        runNIRSsignalProcess(iGrp,iSubj,iRun,handles);

Error in gui_mainfcn (line 96)
        feval(varargin{:});

Error in EasyNIRS (line 43)
    gui_mainfcn(gui_State, varargin{:});

Error in
@(hObject,eventdata)EasyNIRS('popupmenuNIRSsignalProcess_Callback',hObject,eventdata,guidata(hObject))


Error while evaluating uicontrol Callback"

It appears to have an error directly from the short sep processing.

Any help is appreciated.

- Bryan
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