Hi, indeed! Another study from our lab suggesting that it is worth trying:
http://repository.cmu.edu/cgi/viewcontent.cgi?article=1414&context=psychology And there has been plenty of work on cross-participant prediction, including across languages (training on speakers of one language, testing on speakers of another), Brian On Thu, 2013-03-14 at 15:28 -0700, Jonas Kaplan wrote: > Hi Danilo, > > We have done some work looking at classifiers trained on one sensory modality > and tested on another modality (using pymvpa) to find sensory-independent > representations, for example: > > http://www.jneurosci.org/content/32/47/16629.abstract > > In that paper the classification was done within individuals, but we have > done it successfully across individuals as well (leave one subject out > cross-validation). There are many reasons why an analysis such as the one > you propose might fail, but if learning transfers from one study to the other > I think that is very interesting. I would be interested to hear other > opinions on this. > > -Jonas > > ---- > Jonas Kaplan, Ph.D. > Research Assistant Professor > Brain & Creativity Institute > University of Southern California > > On Mar 14, 2013, at 11:42 AM, Danilo Bzdok <[email protected]> wrote: > > > Dear list, > > > > I would like to apply pattern classification to a single seed region, in > > which two fMRI studies revealed convergence. Each of these fMRI studies > > used the same stimulus material across four tasks (to focus on top-down > > effects by subtraction). Both these fMRI studies used the same four tasks, > > but differed in the sensory modality on which the task is based (visual vs > > auditory). In every other respect the fMRI settings/protocoll were > > practically identical. > > Here's now my question: Is it possible to train a classifier for neural > > activity patterns in the converging seed region to test whether activity in > > that area is sensory-independent or sensory-specific? Or is there too much > > confound when comparing between two subjects from very similar yet > > different fMRI studies? Any help would be greatly appreciated. > > > > -- > > Best, > > Danilo Bzdok > > _______________________________________________ > > Pkg-ExpPsy-PyMVPA mailing list > > [email protected] > > http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/pkg-exppsy-pymvpa > > > _______________________________________________ > Pkg-ExpPsy-PyMVPA mailing list > [email protected] > http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/pkg-exppsy-pymvpa -- Brian Murphy Staff Scientist Machine Learning Department Carnegie Mellon University http://www.cs.cmu.edu/~bmurphy/ _______________________________________________ Pkg-ExpPsy-PyMVPA mailing list [email protected] http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/pkg-exppsy-pymvpa
