Yes, I believe that would yield the correct Cohen’s d. --Greg ____________________________________________________________________ Greg Burgess, Ph.D. Staff Scientist, Human Connectome Project Washington University School of Medicine Department of Psychiatry Phone: 314-362-7864 Email: gburg...@wustl.edu
> On Feb 7, 2017, at 12:12 PM, Xavier Guell Paradis <xavie...@mit.edu> wrote: > > Hi Greg, > Thank you for your reply. Would you recommend the following commands to > analyze the data as you suggested?: > > 1) -cifti-merge all level2 cope files of RH (create > "mergedcopeMOTORRHONLY.dtseries.nii") > > 2) -cifti-merge all level2 cope files of CUE (create > "mergedcopeMOTORCUEONLY.dtseries.nii") > > 3) calculate RH minus CUE cope file as follows: > -cifti-math '(x) - (y)' /mergedcopeMOTORRHMINUSCUE.dtseries.nii -var x > /mergedcopeMOTORRHONLY.dtseries.nii -var y > /mergedcopeMOTORCUEONLY.dtseries.nii > > 4) then obtain Cohen's d as follows: > -cifti-reduce /mergedcopeMOTORTMINUSCUE.dtseries.nii MEAN > /meancopeMOTORTMINUSCUE.dscalar.nii; > -cifti-reduce /mergedcopeMOTORHMINUSCUE.dtseries.nii STDEV > /stdevcopeMOTORTMINUSCUE.dscalar.nii; > -cifti-math '(mean) / stdev' /cohendmapMOTORTMINUSCUE.dscalar.nii -var mean > /meancopeMOTORTMINUSCUE.dscalar.nii -var stdev > /stdevcopeMOTORTMINUSCUE.dscalar.nii > > Thank you very much, > Xavier. > ________________________________________ > From: Burgess, Gregory [gburg...@wustl.edu] > Sent: Monday, February 06, 2017 5:18 PM > To: Xavier Guell Paradis > Cc: hcp-users@humanconnectome.org > Subject: Re: [HCP-Users] Motor task contrats: no RH-cue, LH-cue, etc.? > > I thought that contrasting each effector against the average of the others > (e.g., RH-AVG) was a more-effective control to isolate motor-specific > regions. If you are still interested in contrasting each effector versus the > cue (controlling for visual activation without controlling for other > task-related processes), it is possible for you to create it yourself by > subtracting the cope maps for ‘CUE’ from the cope for each effector. > > --Greg > > ____________________________________________________________________ > Greg Burgess, Ph.D. > Staff Scientist, Human Connectome Project > Washington University School of Medicine > Department of Psychiatry > Phone: 314-362-7864 > Email: gburg...@wustl.edu > >> On Feb 3, 2017, at 4:25 PM, Xavier Guell Paradis <xavie...@mit.edu> wrote: >> >> Dear HCP experts, >> I was wondering if there is any reason why motor contrasts of one motor task >> minus cue (e.g. RH-Cue) were not calculated. >> Thank you very much, >> Xavier. >> _______________________________________________ >> HCP-Users mailing list >> HCP-Users@humanconnectome.org >> http://lists.humanconnectome.org/mailman/listinfo/hcp-users > > > ________________________________ > The materials in this message are private and may contain Protected > Healthcare Information or other information of a sensitive nature. If you are > not the intended recipient, be advised that any unauthorized use, disclosure, > copying or the taking of any action in reliance on the contents of this > information is strictly prohibited. If you have received this email in error, > please immediately notify the sender via telephone or return mail. ________________________________ The materials in this message are private and may contain Protected Healthcare Information or other information of a sensitive nature. If you are not the intended recipient, be advised that any unauthorized use, disclosure, copying or the taking of any action in reliance on the contents of this information is strictly prohibited. If you have received this email in error, please immediately notify the sender via telephone or return mail. _______________________________________________ HCP-Users mailing list HCP-Users@humanconnectome.org http://lists.humanconnectome.org/mailman/listinfo/hcp-users
