HIGHLIGHTS
SUMMARY
Fitting these responses using image-computable models, the authors compensate for vignetting and nonetheless find reliable tuning for orientation. Rather, these studies have leveraged the broad spatial coverage afforded by fMRI to reveal a radial bias of orientation preference: voxels respond more strongly to orientations that point from the receptive field center toward fixation. If BOLD activity reflects orientation selectivity, the authors would expect the constrained model to be unable to account for modulations driven by local orientation differences between images. Coarse-scale map of orientation selectivity Explicitly modeling voxel responses enabled the authors . . .
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