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help > Convert .nirs from NIRSport to NIRS.mat for spm_fnirs
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Feb 1, 2020 07:02 PM | Katie Becker
Convert .nirs from NIRSport to NIRS.mat for spm_fnirs
Hi,
I'm trying to process some .nirs files created by a NIRSport system. I would like to analyze them in spm_fnirs but I'm having trouble getting the .nirs files into the NIRS.mat format. I've loaded an old NIRS.mat file in matlab and primarily determined what information is contained in the P and Y structures but there are a few subfields that I can't figure out. Does anyone know what these subfields are?
P.K.M.th
P.K.M.alpha
Any help is greatly appreciated!
I'm trying to process some .nirs files created by a NIRSport system. I would like to analyze them in spm_fnirs but I'm having trouble getting the .nirs files into the NIRS.mat format. I've loaded an old NIRS.mat file in matlab and primarily determined what information is contained in the P and Y structures but there are a few subfields that I can't figure out. Does anyone know what these subfields are?
P.K.M.th
P.K.M.alpha
Any help is greatly appreciated!
Feb 5, 2020 11:02 AM | Sungho Tak - Wellcome Trust Centre for Neuroimaging, UCL
RE: Convert .nirs from NIRSport to NIRS.mat for spm_fnirs
Dear Katie Becker,
P.K.M.th and P.K.M.alpha are parameters of motion artifact removal algorithm (MARA, Scholkmann et al., Physiol Meas 31 (2010) 649-662). Specifically, P.K.M.th is a threshold factor for detecting movement artifact segments, and P.K.M.alpha is a factor for smoothing motion artifact segments. Please see page 10 and 11 of SPM-fNIRS manual for more details.
Best wishes,
Sungho
Originally posted by Katie Becker:
P.K.M.th and P.K.M.alpha are parameters of motion artifact removal algorithm (MARA, Scholkmann et al., Physiol Meas 31 (2010) 649-662). Specifically, P.K.M.th is a threshold factor for detecting movement artifact segments, and P.K.M.alpha is a factor for smoothing motion artifact segments. Please see page 10 and 11 of SPM-fNIRS manual for more details.
Best wishes,
Sungho
Originally posted by Katie Becker:
Hi,
I'm trying to process some .nirs files created by a NIRSport system. I would like to analyze them in spm_fnirs but I'm having trouble getting the .nirs files into the NIRS.mat format. I've loaded an old NIRS.mat file in matlab and primarily determined what information is contained in the P and Y structures but there are a few subfields that I can't figure out. Does anyone know what these subfields are?
P.K.M.th
P.K.M.alpha
Any help is greatly appreciated!
I'm trying to process some .nirs files created by a NIRSport system. I would like to analyze them in spm_fnirs but I'm having trouble getting the .nirs files into the NIRS.mat format. I've loaded an old NIRS.mat file in matlab and primarily determined what information is contained in the P and Y structures but there are a few subfields that I can't figure out. Does anyone know what these subfields are?
P.K.M.th
P.K.M.alpha
Any help is greatly appreciated!