查看文章

Many studies have shown that neural populations in left occipitotemporal cortex (OT) show distinct fMRI responses to words as compared to other visual stimulus categories. Here we investigated the relationship between greater fMRI responses to words as compared to non-words, especially in left OT, and other differences measured using population receptive field (pRF) estimation. The pRF experiments also assessed differences in OT responses to single words versus words viewed in the context of sentences covering larger portions of the visual field. We found that using single words viewed at different locations during the pRF estimation experiments yielded greater word-selective voxels in left OT, and larger pRFs, than did using full-sentence text. We also observed differences in pRF eccentricity, with respect to stimulus type (words versus non-words) and cerebral hemisphere. Left OT showed greater word …