The large-scale organization of shape processing in the ventral and dorsal pathways

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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.


DOI: 10.7554/eLife.34464

Freud E, Culham JC, Plaut DC, Behrmann M. 2017. The large-scale organization of shape processing in the ventral and dorsal pathways. eLife 6:e27576. doi: 10.7554/eLife.27576.

Published 5, October 2017

In Figure 2C, for the dorsal right pathway, the first component and the second component were mistakenly switched. The data described in the text is correct, and this is a graphic error that does not affect the reported results or conclusions.

We have corrected the error by replacing Figure 2C with the correct one.

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