[Homer-users] Questions about GLM beta
YikBiu Leung
yikbiu at gmail.com
Mon Jul 6 08:43:29 EDT 2015
Hi all:
I have been using Homer2 to analyse my data lately, but I there were
some problems:
1. I get the "beta" form the result. but the data look likes this:
val(:,:,1) =
1.0e-05 *
0.7305 -0.0703
val(:,:,2) =
1.0e-05 *
0.2763 0.0416
I am not sure what these three number under each channel mean?
2. When I tried to get the "beta" from one of my experiments by
using GLM, two problems came up :
2.1. When I used "motion_Artifact"and related functions to analyze,
the running process just stopped and matlab reported error in using the
hmrMotionArtifact.
2.2. After I delete the "motion_Artifact" and only use
"GLM_HRF_Drift_SS", the running process was fine except there were warning
about "Some data points in d are zero or negative". And the major problem
was that there was no value under variable "beta". Then I tried to use
Nirs_spm and it worked with no problem.
To illustrate my problem, the attatchment contains some screenshots of
the problem and an raw .nirs data.
I am not sure what's wrong and I really hope someone can help me with
this.
Thank you!
Yours sincerely
Yibiao. Liang
Graduate student
Department of Psychology
Zhejiang Normal University
PRC
problem with GLM beta.rar
<https://drive.google.com/file/d/0B99GKxx5tyiAMmNZNmVoUjJ6Um8/view?usp=drive_web>
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