http://gru.brain.riken.jp/ 2013-06-20T13:38:20+09:00 http://gru.brain.riken.jp/ http://gru.brain.riken.jp/lib/images/favicon.ico text/html 2013-06-20T06:47:24+09:00 julien http://gru.brain.riken.jp/doku.php/mrtools/tutorialsglm_v2?rev=1371678444&do=diff This tutorial shows you how to run a single-subject GLM analysis with mrLoadRet. The General(ized) Linear Model is commonly used for fMRI data analysis. Basically it is an analysis in which you specify a set of factors that you think will have influenced the time series of your fMRI data and assume that these factors all sum linearly with an unknown weighting (i.e. beta weight) for each voxel. Each factor is really just a vector of 1's and 0's specifying when an event of a particular type happen… text/html 2013-06-19T09:58:49+09:00 justin http://gru.brain.riken.jp/doku.php/mgl/knownissues?rev=1371603529&do=diff Check here for issues that have been resolved. Some issues may also be covered in our issue tracking software redmine. We (Apple developers) run the latest Mac OS (10.8.4 as of 6/19/2013) with the latest version of Matlab (8.1) or (Linux developers) Ubuntu 64-bit (Gutsy) and 32-bit (Feisty) with Matlab 7.4 and the binaries are created to run on these systems. As noted above, some older versions (notably Matlab 14.1) are not able to use these mex files and crash when you try to run mglOpen. If … text/html 2013-06-19T09:51:19+09:00 justin http://gru.brain.riken.jp/doku.php/mgl/overview?rev=1371603079&do=diff Mgl is a suite of mex/m files for displaying visual psychophysics stimuli and writing experimental programs in Matlab. Runs on Mac OS X (G4/5 and Intel 32 and Intel 64 bit OS Versions 10.5-10.7) Version 2.0. An older version 1.5 runs on Linux. text/html 2013-06-18T22:17:15+09:00 justin http://gru.brain.riken.jp/doku.php/mgl/resolved_isses?rev=1371561435&do=diff There was an incompatibility issue with Matlab2013a on Mac OS (the full screen contexts showed up in black and drawing to the screen did not work. Turned out it had to do with a deprecated call to CGLSetFullScreen( contextObj ) ; Which in matlab2013a (MacOS 10.8) had to be replaced with: text/html 2013-06-18T19:29:43+09:00 julien http://gru.brain.riken.jp/doku.php/mrtools/documentationglm_v2?rev=1371551383&do=diff This wiki page provides some more background about the v2.0 implementation of the GLM code by Julien Besle (julienbesle@gmail.com) done at Nottingham, as well as a . For the original version of the GLM analysis, on which some of the code was based, see original GLM analysis. text/html 2013-06-17T13:10:07+09:00 justin http://gru.brain.riken.jp/doku.php/grupub/lectures?rev=1371442207&do=diff Note that if you want to access these slides from outside of RIKEN you will be prompted to login: Name: gru Password: gru Lecture topic Who Date Slides Series Faces Topi March 19, 2013 Slides Informal lecture Informal lecture on decoding Justin January 29, 2013Slides Informal lecture Informal lecture on GLM and event related analysis Justin August 29, 2012Slides Informal lecture Informal lecture on MRI Allen July 18, 2012 SlidesInformal lecture Informal lecture on BOLD principle… text/html 2013-06-13T10:59:25+09:00 justin http://gru.brain.riken.jp/doku.php/shared/publications?rev=1371088765&do=diff Merriam, E. P., Gardner, J. L., Movshon, J. A., and Heeger, D. J. (2013) Modulation of visual responses by gaze direction in human visual cortex. Journal of Neuroscience 33: 9879-9889 DOI Abstract To locate visual objects, the brain combines information about retinal location and direction of gaze. Studies in monkeys have demonstrated that eye position modulates the gain of visual signals with “gain fields,” so that single neurons represent both retinotopic location and eye position. We wish… text/html 2013-06-12T14:05:47+09:00 ilias http://gru.brain.riken.jp/doku.php/grum/top?rev=1371013547&do=diff General Info What: A biweekly lab meeting to discuss papers related to GRU research interests and to discuss lab issues. Where: GRU Meeting Room (BSI East Bld. 207) mailing list:<grum@brain.riken.jp> Next meeting :Jun 13(Thr), 13:30- A neural representation of prior information during perceptual inference. Summerfield, C., and Koechlin, E. (2008). Neuron 59, 336–347.