[Homer-users] Questions about Homer

[Meryem Ayse Yucel]

Hi,

I don't think the  current version allows you to visualize different
conditions on the same figure. What you could do is to first fix the
y-axis range using the zoom-pan panel and copy the figure for each
condition (from view copy current plot).

You can simply say no to default process question. The software will load
default processing options. If you want to generate your own, then you
need to go tools>processStreamgui, then choose the options you want. Then
you need to go to file->save process options (*cfg) to save the options as
a config file. They won't automatically be saved as a separate file
otherwise, but they will be saved in individual nirs files if you run
HOMER with your options loaded.

Please visit the following link to have some information on how you can
get HRF. Please let us know if these tutorials won't be sufficient.
http://www.nmr.mgh.harvard.edu/PMI/resources/homer2/documentation.htm#tutorials

btw I did not quite understand your second question, sorry.

Hope this helps,

Meryem



> Dear Expert,
> I'm performing fNirs analysis using data from Hitachi etg 4000. I
> converted Hitachi csv file into Homer nirs file Rebecca's Hitachi_2_Homer
> script. My first problem is to import stimuli (as imposed during Hitachi
> experiment) directly into Homer file. For this problem, I'm in contact
> with Rebecca.
>
> The first question about Homer sofware is on the possibility to  visualize
> and thus compare, in the same plot windows, HbO (for example) between two
> experiments (resting and finger tapping).
>
> The second question is the following:
> How is possible to find a correspondence between channels number in pos
> configuration given from Rebecca to the configurations used in our
> experiment? (We don't have 3D digitiser).
>
> Third question:
> If my file is imported for the first time in Homer, Software asks me
> processOpt_default.cfg that I haven't. It is generated after processing
> data? If yes, is it generated whenever you make changes on processing?
>
>
> Fourth question:
> I need more information about how HRF is calculated and on the procedure
> to do it for a new set of data.
>
> Thanks
>
>
>
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