TY - DATA T1 - The large-scale organization of shape processing in the ventral and dorsal pathways: Subject 160923131351_Experiment 2 PY - 2017/10/04 AU - Erez Freud AU - Jody Culham AU - David Plaut AU - Marlene Behrmann UR - https://kilthub.cmu.edu/articles/dataset/The_large-scale_organization_of_shape_processing_in_the_ventral_and_dorsal_pathways_Subject_160923131351_Experiment_2/5441851 DO - 10.1184/R1/5441851.v1 L4 - https://ndownloader.figshare.com/files/9409369 L4 - https://ndownloader.figshare.com/files/9409372 L4 - https://ndownloader.figshare.com/files/9409375 L4 - https://ndownloader.figshare.com/files/9409378 L4 - https://ndownloader.figshare.com/files/9409381 L4 - https://ndownloader.figshare.com/files/9409384 L4 - https://ndownloader.figshare.com/files/9409387 L4 - https://ndownloader.figshare.com/files/9409390 L4 - https://ndownloader.figshare.com/files/9409393 L4 - https://ndownloader.figshare.com/files/9461899 KW - fMRI BOLD data KW - fMRI KW - fMRI brain imaging data N2 - 160923131351 bold signal. Part of a dataset from the paper entitled : The large-scale organization of shape processing in the ventral and dorsal pathways by Freud, Culham, Plaut and Behrmann. See - https://doi.org/10.1184/R1/c.3889873.v1. For each participant 8 functional runs and one anatomical run are included. Abstract:Although shape perception is considered a function of the ventral visual pathway, evidence suggests that the dorsal pathway also derives shape-based representations. In two psychophysics and neuroimaging experiments, we characterized the response properties, topographical organization and perceptual relevance of these representations. In both pathways, shape sensitivity increased from early visual cortex to extrastriate cortex but then decreased in anterior regions. Moreover, the lateral aspect of the ventral pathway and posterior regions of the dorsal pathway were sensitive to the availability of fundamental shape properties, even for unrecognizable images. This apparent representational similarity between the posterior-dorsal and lateral-ventral regions was corroborated by a multivariate analysis. Finally, as with ventral pathway, the activation profile of posterior dorsal regions was correlated with recognition performance, suggesting a possible contribution to perception. These findings challenge a strict functional dichotomy between the pathways and suggest a more distributed model of shape processing. ER -