Hello Bo-yong, We did not directly measure the size of stimuli for the working memory paradigm. Unfortunately, the same scanner environment is no longer available, so we can’t really measure it in retrospect.
--Greg ____________________________________________________________________ Greg Burgess, Ph.D. Staff Scientist, Human Connectome Project Washington University School of Medicine Department of Psychiatry Phone: 314-362-7864 Email: [email protected] > On Dec 23, 2016, at 7:00 PM, Bo Yong Park <[email protected]> wrote: > > Thanks a lot Elam and Keith. > > Then, can I ask you one more question? > > Can I know about the stimulus size of the working memory task paradigm? > > I also want to know about the visual angle for this task paradigm. > > There was no information about it in the manual or any papers. > > > Sincerely, > Bo-yong Park. > ᐧ > > 2016-12-24 3:15 GMT+09:00 Keith Jamison <[email protected]>: > The files that Jenn pointed to are the stimulus MASKS, which of course is the > most important aspect of the retinotopy stimulus, but it is worth noting that > the stimulus itself is not a standard checkerboard, but a rapidly changing > collage of real-world objects, faces, etc. You can find more information > about the stimulus here: http://kendrickkay.net/analyzePRF/ > > -Keith > > On Fri, Dec 23, 2016 at 12:50 PM, Elam, Jennifer <[email protected]> wrote: > Hi Bo Yong, > > Attached is the 7T Retinotopy protocol off the scanner and here is a summary > of scan parameters: > > <pastedImage.png> > > > The stimulus size/diameter was 16.0 deg for HCP 7T, which is especially > important for the retinotopy data. This is calculated from these > measurements: > 101.5cm eye to screen, 28.5 for stimulus diameter > which means > > >> atan(28.5/2/101.5)/pi*180*2 > ans = > 15.9835095188501 = 16 degrees > > The retinotopy stimulus files are available here: > https://db.humanconnectome.org/app/action/ChooseDownloadResources?project=HCP_Resources&resource=7T_Movies&filePath=retinotopy_stimulus.zip > > > Hopefully this gets you most of the information that you need. Please let me > know what other info you need and I or Keith will dig it up. > > > Best, > > Jenn > > > Jennifer Elam, Ph.D. > Scientific Outreach, Human Connectome Project > Washington University School of Medicine > Department of Neuroscience, Box 8108 > 660 South Euclid Avenue > St. Louis, MO 63110 > 314-362-9387 > [email protected] > www.humanconnectome.org > > > > > > From: [email protected] > <[email protected]> on behalf of Bo Yong Park > <[email protected]> > Sent: Thursday, December 22, 2016 11:22 PM > To: [email protected] > Subject: [HCP-Users] 7T retinotopy MRI scanning sequence > > To HCP users. > > Hello, every HCP users. > > I am wondering where can I find detailed scanning parameters such as visual > angle of eccentricity or polar angle, checkerboard segments, number of > volumes and scanning duration etc. > > The data were released in the Connectome DB, but I cannot find any > information about scanning sequences. > > Anyone knows about it? > > Sincerely, > Bo-yong Park. > [email protected] > > Windows 10용 메일에서 보냄 > > _______________________________________________ > HCP-Users mailing list > [email protected] > http://lists.humanconnectome.org/mailman/listinfo/hcp-users > > > > > > -- > Bo-yong Park > Sungkyunkwan University > [email protected] > _______________________________________________ > HCP-Users mailing list > [email protected] > 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. _______________________________________________ HCP-Users mailing list [email protected] http://lists.humanconnectome.org/mailman/listinfo/hcp-users
