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Topic: DCNNs

Seminar
1 seminar

In Artificial Intelligence and Biology

Seminar · Computational Neuroscience

NMC4 Short Talk: Directly interfacing brain and deep networks exposes non-hierarchical visual processing

Nick Sexton (he/him) · University College London

Wed, Dec 1, 2021 · 09:00 UTC

A recent approach to understanding the mammalian visual system is to show correspondence between the sequential stages of processing in the ventral stream with layers in a deep convolutional neural network (DCNN), providing evidence that visual information is processed hierarchically, with successive stages containing ever higher-level information. However, correspondence is usually defined as shared variance between brain region and model layer. We propose that task-relevant variance is a stricter test: If a DCNN layer corresponds to a brain region, then substituting the model’s activity with