Citation: Max K, Jaras I, Granier A, Wilmes KA, Petrovici MA (2026) ‘Backpropagation and the brain’ realized in cortical error neuron microcircuits. PLoS Comput Biol 22(4): e1014164. https://doi.org/10.1371/journal.pcbi.1014164 Editor: Roman Bauer, University of Surrey, UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND Received: September 8, 2025; Accepted: March 25, 2026; Published: April 17, 2026 Copyright: © 2026 Max et al.