[Homer-users] HRF

[Yogev Koren]

Hey Patrick
Thanks for the answer, it makes perfect sense.
However, I do have two concerns: the first is technical- can I do that in
Homer?
The second is about temporal characteristics of the HRF- when I normalize
as a percent of the  task, I loose all time relevant parameters (e.g. TTP,
TTN).

Yogev

2018-02-05 19:52 GMT+02:00 Patrick Neary <Patrick.Neary at uregina.ca>:

> Hi Yogev,
> Are you talking about NIRS parameters, for example oxy-Hb, deoxy-Hb, etc?
> If so, what we do is normalize to 100%. So if one test is 20 sec and
> another test is 25 sec, we re-adjust each to 100%. That means for the 20
> sec test each 10% value is at 2 sec; and for the 25 sec test each 10% valve
> is at 2.5 sec. Does that make sense?
>
> cheers
> Patrick
>
> >>> Yogev Koren <yogevk at post.bgu.ac.il> 2/4/2018 7:17 AM >>>
> Hey Everyone
> My research data contains time series of unequal length.
> e.g. one subject walked 20 meters in 20 seconds, while the second walked
> the same 20 meters but faster, lets say in 15 seconds.
> Is it possible to normalize the length (in time) in order to calculate the
> group HRF?
>
> Thanks
> Yogev
>
>
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