Extended Data Fig. 3: Learning XOR with symmetric feedback pathways.
From: Burst-dependent synaptic plasticity can coordinate learning in hierarchical circuits
a, Schematic diagram illustrating the symmetric feedback (⊕ and ⊕). b, Output-layer activity for the XOR task. Note that the XOR task is still solved. Only a single realization is displayed here. (ci-cii) The symmetric feedback yields very similar representations at the hidden layer.
