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Homer2 Question

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Nicollette Purcell
Posts: 28
Topic starter
(@nicopurc88)
Eminent Member
Joined: 2 years ago

Hi All,

I know there isn't official Homer2 support anymore, but I was wondering if someone could explain to me how to interpret the groupResults.mat output. I need a participant's concentration values for their whole testing period rather than their HRF export. 

I went to groupResults.mat >> group.subjs >> group.subjs(1).procResults >>dc.Avg     which brings up data in the below format (also attached)...Can someone explain exactly what each column is, how I know what channel's data I'm looking at etc.? Thansk in advance.

 

 

val(:,:,1,1) =

1.0e-05 *

-0.0189 0.0063 -0.0126
-0.0190 0.0064 -0.0126
-0.0192 0.0065 -0.0127
-0.0193 0.0065 -0.0127
-0.0193 0.0066 -0.0128

.....

 

val(:,:,2,1) =

1.0e-05 *

-0.0593 0.0024 -0.0569
-0.0583 0.0025 -0.0558
-0.0573 0.0026 -0.0547
-0.0563 0.0027 -0.0536
-0.0552 0.0028 -0.0525
-0.0542 0.0028 -0.0513
-0.0531 0.0029 -0.0502

3 Replies
David Boas
Posts: 229
(@dboas)
Reputable Member
Joined: 2 years ago

This is most likely HbO, HbR and HbT for each of the channels.

You need to look at the measurement list, which should be somewhere in that data structure, to figure out which source and detector are used for a given channel.

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1 Reply
Nicollette Purcell
(@nicopurc88)
Joined: 2 years ago

Eminent Member
Posts: 28

Thanks @dboas I found the measurement list. I realize the subj dc procresults are actually the HRF results. Does Homer2 not output the concentration results for the full testing period in addition to the block avg results like Homer3?

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David Boas
Posts: 229
(@dboas)
Reputable Member
Joined: 2 years ago

We use to output all the run level results including the concentration results in procresults at the run level. Did you search around the whole data structure to find the run level results? Not the subject level results. The run level results make the output file quite large.

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