[Homer-users] Fwd: Fw:Difference between Homer and Homer2

[Meryem Ayse Yucel]

Hi Jingping,

HOMER2 plots in microMs while HOMER plots in Ms. So you need to have a
difference in the order of 10-6. Since your HOMER shows numbers in 10-5 I
am guessing this could be due to your SD file units (in cm or in mm).
HOMER takes them as cm, while HOMER2 asks you what unit you have and
converts accordingly. Please double check this. Besides these two, there
is still a little variance between the two time series, maybe you can
check the individual codes (filtering etc) to see what makes this
difference.

Hope this helps.

Meryem



> Dear Users:
>     I have a question about the difference between Homer and Homer2 on
> preprocessing. When I do analysis on the same nirs data  using Homer and
> Homer2 respectively. However, I find the results(HbO,HbR,HbT ) are
> unequally, although the shape of the time-series is very similar.  The
> processing stream what I set  is: Intensity_to_OD,Bandpass_Filter
> (hpf=0.01,hpf=0.1),OD_to_Conc。The  attachment in this e-mail is  three
> screenshots from Homer's result , Homer2's result, and Homer2's processing
> parameters.
>
> Doesn't anyone know why or what make the results different?
>
>
> --
>
> --
> Sincerely,
>
> Jingping.Xu
> State Key Laboratory of Cognitive
> Neuroscience and Learning,
> Beijing Normal University
> Add: No.19 Xinjiekouwai Street,
> Beijing, 100875, China, PR
> Tel: (+86)18101359781
> _______________________________________________
> Homer-users mailing list
> Homer-users at nmr.mgh.harvard.edu
> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/homer-users