Friday, May 25, 2007

Only some spatial patterns of fMRI response are read out in task performance

Mark A Williams1, Sabin Dang1 and Nancy G Kanwisher
Nature Neuroscience - 10, 685 - 686 (2007)
Published online: 7 May 2007; | doi:10.1038/nn1900

Classification methods show that the spatial pattern of a functional magnetic resonance imaging response across the cortex contains category information, but whether such patterns are used, or 'read out', in behavioral performance remains untested. We show that although the spatial pattern in both the retinotopic and lateral occipital cortex (LOC) in humans contains category information, only in the LOC is the pattern stronger for correct than for incorrect trials. Thus, some, but not all, spatial patterns are read out during task performance.


No comments: