[Homer-users] Spatial smoothing in Homer2 and issues related to prune channel function

[David Boas]

1) We have no spatial smoothing in the Homer functions. This is something good to think about once we have Homer and AtlasViewer integrated.

2) You need to set the prune channels options to match your data values. It sounds like you are reporting good SNR metrics based on guidance you were provided for the NIRX. Read the help information for the prune channels command and adjust to match your metrics.

I hope that helps.

David




> On Jun 9, 2015, at 3:01 AM, Harleen Chhabra <harleenchhbr1 at gmail.com> wrote:
> 
> Hi all,
> 
> I am using CW NIRX Scout for my fNIRS data acquisition and i am trying to analyse my data with Homer2. I am still getting familiarized with the software and so have two very basic questions:
> 
> 1. Does Homer2 allows for spatial smoothing of the data? If yes, then if anyone can help me figure out the function in the processing stream?
> 
> 2. When i try using the "prune channel" function with default values, all the channels are excluded from analysis. During data acquisition it is made sure that the gain is below 8 and the CV is below 15% for all the channels. Also the channels are checked for SNR before starting the acquisition. I am not sure as to where i am going wrong. If anyone can help me figure this out.
> Thank you.
> 
> Harleen Chhabra,
> PhD scholar,
> Department of Psychiatry,
> National Institute of Mental Health and Neurosciences (NIMHANS),
> India.
> _______________________________________________
> Homer-users mailing list
> Homer-users at nmr.mgh.harvard.edu
> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/homer-users

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.nmr.mgh.harvard.edu/pipermail/homer-users/attachments/20150609/e4f3bfdf/attachment.html