tag:blogger.com,1999:blog-1405968300258104460.post5426751384501717477..comments2024-03-27T01:18:24.341-04:00Comments on Andy's Brain Blog: The Will to (FMRI) PowerAndrew Jahnhttp://www.blogger.com/profile/16435706598096921650noreply@blogger.comBlogger9125tag:blogger.com,1999:blog-1405968300258104460.post-70402139957409730532021-02-23T03:02:26.306-05:002021-02-23T03:02:26.306-05:00Hi Andy,
thanks for your fast reply. Do you recomm...Hi Andy,<br />thanks for your fast reply. Do you recommend another software for power calculation? I think the site of Neuropower is down already for a while. <br />Best,<br />AylinAylinhttps://www.blogger.com/profile/17072159159905781952noreply@blogger.comtag:blogger.com,1999:blog-1405968300258104460.post-32174342529303458242021-02-22T15:37:01.968-05:002021-02-22T15:37:01.968-05:00Hi Aylin,
I'm actually not entirely sure; it&...Hi Aylin,<br /><br />I'm actually not entirely sure; it's been a while since I used the software package, and I don't think it's being updated anymore. I think it refers to the FWE correction for the clusters.<br /><br />-AndyAndrew Jahnhttps://www.blogger.com/profile/16435706598096921650noreply@blogger.comtag:blogger.com,1999:blog-1405968300258104460.post-41504300477036190992021-02-19T02:51:57.508-05:002021-02-19T02:51:57.508-05:00Hey Andy,
does the Type I error rate (in your exa...Hey Andy, <br />does the Type I error rate (in your example 0.001) refer to the SPM single voxel threshold or the cluster threshold or FWE-correction? I am wondering because Mumford describes a Type I error of 5% in her paper on fMRIpower. <br />Thanks in advance!Aylinhttps://www.blogger.com/profile/17072159159905781952noreply@blogger.comtag:blogger.com,1999:blog-1405968300258104460.post-41382619321350623562017-04-11T13:09:58.270-04:002017-04-11T13:09:58.270-04:00Hey Liliana, I probably won't do another updat...Hey Liliana, I probably won't do another update on fMRIpower; I'm using neuropowertools.org instead. It's more current, and it doesn't require loading any design matrices (you just need a second-level contrast map and a mask).<br /><br />Best,<br /><br />-AndyAndrew Jahnhttps://www.blogger.com/profile/16435706598096921650noreply@blogger.comtag:blogger.com,1999:blog-1405968300258104460.post-88373115268320265892017-04-07T15:23:16.488-04:002017-04-07T15:23:16.488-04:00Hi Andy,
I'm having a hard time using fmripowe...Hi Andy,<br />I'm having a hard time using fmripower with fsl. But you didn't show the steps for FSL use in your video. Are you considering to do an update?<br />Thanks!Lilianahttps://www.blogger.com/profile/10110268115310273941noreply@blogger.comtag:blogger.com,1999:blog-1405968300258104460.post-18900489817877112832017-03-08T14:34:50.868-05:002017-03-08T14:34:50.868-05:00It's hard to tell; maybe it's an SPM versi...It's hard to tell; maybe it's an SPM version issue? fmripower was developed a while ago, and maybe it only works up through SPM8. I'm not sure; I haven't used it in a while, and when I was using it, it was with SPM5.<br /><br />An alternative option is to use neuropowertools.org: upload your second-level map, give it a mask (optional), and fill out a few other fields and you should be good to go.<br /><br />-AndyAndrew Jahnhttps://www.blogger.com/profile/16435706598096921650noreply@blogger.comtag:blogger.com,1999:blog-1405968300258104460.post-11882660181077140432017-03-01T00:14:01.493-05:002017-03-01T00:14:01.493-05:00Hi - I'm getting the same error also and am de...Hi - I'm getting the same error also and am definitely using a 2nd level SPM.mat file. I don't seem to be able to manually enter a design even though instructions indicate this should be an option...?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-1405968300258104460.post-90859365784887992322017-02-13T13:00:52.266-05:002017-02-13T13:00:52.266-05:00Hey Izz, are you using a 2nd-level SPM.mat file? I...Hey Izz, are you using a 2nd-level SPM.mat file? It should work on any file that includes multiple subjects.<br /><br />-AndyAndrew Jahnhttps://www.blogger.com/profile/16435706598096921650noreply@blogger.comtag:blogger.com,1999:blog-1405968300258104460.post-72740326049298045562017-02-12T01:20:30.147-05:002017-02-12T01:20:30.147-05:00Hi,
I have a problem when using fmripower.
I got ...Hi,<br /><br />I have a problem when using fmripower.<br />I got an error as below when I click 'select design matrix'<br /><br />Undefined function or variable "new_design".<br /><br />Error in fmripower_spm/design_push_Callback (line 284)<br /> if ~isnumeric(new_design)<br /> <br />Error while evaluating uicontrol CallbackIzzhttps://www.blogger.com/profile/04181437787055771565noreply@blogger.com