[Homer-users] AtlasViewer - visualizing recorded NIRS data
Vera Gramigna
veragramigna at yahoo.it
Mon Apr 20 15:02:05 EDT 2015
I need support on Homer regarding the stimuli and HRF.
Can I use this mail to ask a few questions???
--------------------------------------------
Lun 20/4/15, David Boas <dboas at nmr.mgh.harvard.edu> ha scritto:
Oggetto: Re: [Homer-users] AtlasViewer - visualizing recorded NIRS data
A: homer-users at nmr.mgh.harvard.edu
Data: Lunedì 20 Aprile 2015, 14:45
A tutorial
on how to use AtlasViewer is about to be published in
Neurophotonics and will be freely available.
We
will post the link to the paper here once it is
available.
David
...
http://brain.kenes.com/
Society for fNIRSMake sure
you get the monthly news letterSubscribe
by sending an email to fnirs-community-subscribe at fnirs.orgYou can
unsubscribe by sending an email to fnirs-community-unsubscribe at fnirs.org
On
Apr 20, 2015, at 12:02 PM, Meryem Ayse Yucel <mayucel at nmr.mgh.harvard.edu>
wrote:
Hi Pankaj,
Please see my responses
interleaved.
Meryem
Hi Homer-users,
I am trying to get used to
AtlasViewer. I have followed all the tutorial
videos on youtube and
listed on tutorial page of Homer website.
Is there a way to visualise the actual
recorded NIRS data over the Atlas ?
Some SPM or conditional comparison
?
The current version of
AtlasViewer does not have this option, however that
is in our to do list.
As of
now, please correct me if I am wrong, AtlasViewer can
visualise the
optode,
channel locations and compute and display sensitivity
profiles for
channel
locations.
That is correct. You can also evaluate
probe fabrication error and
inter-subject probe placement
variability.
Again, I find very little details as
to what is sensitivity profile of a
channel ?
It is the sensitivity of the channel
to absorption changes. Sensitivity
matrix (A) transforms the absorption
change in each voxel to a measurement
change (eg optical density change). Or
in other words, it will give us the
information of how much absorption
change has taken place if we observe
this much optical density change at a
specific source detector couple,
because the optical density changes we
observe is actually an integration
of absorption changes over a volume
(the tissue under the source and
detector where the photon travel takes
place). This A matrix can be
obtained by performing Monte Carlo
simulations of photon migration from or
to each optode.
I
appreciate efforts of the developers in making Homer and
AtlasViewer
tools.
Your response to my queries would really be appreciated.
Kind regards
Pankaj
_______________________________________________
Homer-users mailing
list
Homer-users at nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/homer-users
_______________________________________________
Homer-users mailing
list
Homer-users at nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/homer-users
-----Segue allegato-----
_______________________________________________
Homer-users mailing list
Homer-users at nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/homer-users
The
information in this e-mail is intended only for the person
to whom it is
addressed. If you believe this
e-mail was sent to you in error and the e-mail
contains patient information, please contact
the Partners Compliance HelpLine at
http://www.partners.org/complianceline .
If the e-mail was sent to you in error
but
does not contain patient information, please contact the
sender and properly
dispose of the
e-mail.
More information about the Homer-users
mailing list