New preprint available on bioRxiv:

Lukas HahnDmitry BalakhonovMikael LundqvistAndreas Nieder and Jonas Rose: Oscillations without cortex: Working memory modulates brainwaves in the endbrain of crows.

Cognitively modulated local field potentials in the avian brain appear very similar to those found in mammals. This indicates that neural networks required for higher cognition have evolved in parallel.