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Data_Extracting

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Anil Kamat
Posts: 1
Topic starter
(@anil)
New Member
Joined: 2 years ago

Hi all,

I have a quick question related to the groupresult. 
 
The fNIRS data that I am working on was processed by somebody else, now I only have the groupresult.mat from which I can extract the signals however, I don't have information on which signal belongs to which source-detector pair (like "S7_D23_HbO").  Can someone help me to find the sd pair from the groupresult.mat?
Unfortunately, I couldn't find them upon searching exhaustively. 
 
 
Thank you 
-Anil
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David Boas
Posts: 237
(@dboas)
Reputable Member
Joined: 2 years ago

@anil, assuming you are using Homer3, then:

load groupResults.mat

Then browse the data structure and you will find the probe details in

group.subjs(1).runs.acquired.probe

This field of the structure has these fields:

wavelengths: [2×1 double]
wavelengthsEmission: []
sourcePos2D: [4×3 double]
detectorPos2D: [20×3 double]
landmarkPos2D: []
sourcePos3D: []
detectorPos3D: []
frequencies: 1
timeDelays: 0
timeDelayWidths: 0
momentOrder: []
correlationTimeDelays: 0
correlationTimeDelayWidths: 0
sourceLabels: {4×1 cell}
detectorLabels: {20×1 cell}
landmarkLabels: []

 

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