Topic
Neural network models of the brain research, explained
3 open-access neural network models of the brain studies, each with a flashcard deck and a quiz.
- Which vision models represent objects like the brain's IT cortex?
Only a deep network trained with a million labelled images came close to the category structure of inferior temporal cortex; unsupervised and hand-engineered models did not.
- Do deep neural networks predict early visual neurons best?
Deep convolutional networks predicted monkey V1 responses to natural images far better than classic Gabor-style models, which suggests V1 computation involves several nonlinear steps.
- Could brain-like local learning rules approximate backpropagation?
A predictive coding network that changes each synapse using only the activity of the two neurons it connects can learn almost exactly like backpropagation, reaching the same accuracy on handwritten digits.