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10.1016/j.neuroimage.2008.11.009 http://scihub22266oqcxt.onion/10.1016/j.neuroimage.2008.11.009 C4415527!4415527!19100844     free     free     free Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534       Neuroimage 2009 ; 45 (2): 522-36 Nephropedia Template TP {{tp|p=19100844|t=2009. The Representation of Object Viewpoint in Human Visual Cortex |pdf=|usr=}}{{19100844}} gab.com Text The Representation of Object Viewpoint in Human Visual Cortex JO: Neuroimage http://www.kidney.de/pget.php?&tw=1&pmid=19100844 #FOAvip Understanding the nature of object representations in the human brain is critical for understanding the neural basis of invariant object recognition. However, the degree to which object representations are sensitive to object viewpoint is unknown. Using fMRI we employed a parametric approach to examine the sensitivity to object view as a function of rotation (0°?180°), category (animal/vehicle) and fMRI-adaptation paradigm (short or long-lagged). For both categories and fMRI-adaptation paradigms, object-selective regions recovered from adaptation when a rotated view of an object was shown after adaptation to a specific view of that object, suggesting that representations are sensitive to object rotation. However, we found evidence for differential representations across categories and ventral stream regions. Rotation cross-adaptation was larger for animals than vehicles, suggesting higher sensitivity to vehicle than animal rotation, and largest in the left fusiform/occipito-temporal sulcus (pFus/OTS), suggesting this region has low sensitivity to rotation. Moreover, right pFus/OTS and FFA responded more strongly to front than back views of animals (without adaptation) and rotation cross-adaptation depended both on the level of rotation and the adapting view. This result suggests a prevalence of neurons that prefer frontal views of animals in fusiform regions. Using a computational model of view-tuned neurons, we demonstrate that differential neural view tuning widths and relative distributions of neural-tuned populations in fMRI voxels can explain the fMRI results. Overall, our findings underscore the utility of parametric approaches for studying the neural basis of object invariance and suggest that there is no complete invariance to object view. Twit Text FOAVip The Representation of Object Viewpoint in Human Visual Cortex ????Neuroimage http://www.kidney.de/pget.php?&tw=1&pmid=19100844 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=19100844 #FOAvip English Wikipedia <ref>{{Cite pmid|19100844}}</ref> The Representation of Object Viewpoint in Human Visual Cortex #MMPMID19100844 Andresen DR; Vinberg J; Grill-Spector K Neuroimage 2009[Apr]; 45 (2): 522-36 PMID19100844show ga Understanding the nature of object representations in the human brain is critical for understanding the neural basis of invariant object recognition. However, the degree to which object representations are sensitive to object viewpoint is unknown. Using fMRI we employed a parametric approach to examine the sensitivity to object view as a function of rotation (0°?180°), category (animal/vehicle) and fMRI-adaptation paradigm (short or long-lagged). For both categories and fMRI-adaptation paradigms, object-selective regions recovered from adaptation when a rotated view of an object was shown after adaptation to a specific view of that object, suggesting that representations are sensitive to object rotation. However, we found evidence for differential representations across categories and ventral stream regions. Rotation cross-adaptation was larger for animals than vehicles, suggesting higher sensitivity to vehicle than animal rotation, and largest in the left fusiform/occipito-temporal sulcus (pFus/OTS), suggesting this region has low sensitivity to rotation. Moreover, right pFus/OTS and FFA responded more strongly to front than back views of animals (without adaptation) and rotation cross-adaptation depended both on the level of rotation and the adapting view. This result suggests a prevalence of neurons that prefer frontal views of animals in fusiform regions. Using a computational model of view-tuned neurons, we demonstrate that differential neural view tuning widths and relative distributions of neural-tuned populations in fMRI voxels can explain the fMRI results. Overall, our findings underscore the utility of parametric approaches for studying the neural basis of object invariance and suggest that there is no complete invariance to object view. äThe Representation of Object Viewpoint in Human Visual Cortex (epmc).pdf DeepDyve Pubget Overpricing