“Reassessing Hierarchical Correspondences between Brain and Deep Networks through Direct Interface”, 2022-07-13 ():
Functional correspondences between deep convolutional neural networks (DCNNs) and the mammalian visual system support a hierarchical account in which successive stages of processing contain ever higher-level information. However, these correspondences between brain and model activity involve shared, not task-relevant, variance.
We propose a stricter account of correspondence: If a DCNN layer corresponds to a brain region, then replacing model activity with brain activity should successfully drive the DCNN’s object recognition decision.
Using this approach on 3 datasets, we found that all regions along the ventral visual stream best corresponded with later VGG model layers, indicating that all stages of processing contained higher-level information about object category.
Time course analyses suggest that long-range recurrent connections transmit object class information from late to early visual areas.