For the letter “Learning with ‘Relevance’: Using a Third Factor to Stabilize Hebbian Learning” by Bernd Porr and Florentin Wörgötter, Neural Computation 19(10): 2694–2719, the additional acknowledgment should read:
B.P. and F.W. acknowledge financial support by the German Ministry for Education and Research (BMBF) via the Bernstein Center for Computational Neuroscience (BCCN) Göttingen under Grant No. 01GQ0432.