<div dir="ltr"><div>Dear all,</div><div><br></div>I am using regressconfound on Neuromag data. In CTF data, data for coil1, coil2 and coil3 are generated and then circumcenter function is called to compute 3 translational and 3 rotational dof. <div>
Unlike, CTF, Neuromag maxfilter allows to compute CHPI or QUAT channels that provide quarternion parameters q1 through q6, where q4,q5 and q6 are translations in x, y and z directions. I am using these q4,q5 and q6 to directly compute the rotational orientations (using the last part of the circumcenter.m script).</div>
<div><br></div><div>It is said regressconfound must be used as a last step prior to stats. I have 4 blocks of data for each subject. Which option below should I follow?</div><div>1. Apply regress confound separately to four blocks? But, then I have to average these four blocks once again using ft_timelockanalysis, then grand average using ft_timelockgrandaverage before computing stats.</div>
<div>2. Or should I append the four blocks first, then perform regressconfound? In this case, I directly go to grandaverage and stats.</div><div><br></div><div>Any suggestion is appreciated.</div><div><br></div><div>Thanks,</div>
<div>Raghavan</div></div>