Correction: The article “Activity of Renshaw Cells during locomotor-Like Rhythmic Activity in the Isolated Spinal Cord of Neonatal Mice,” by Hiroshi Nishimaru, Carlos E. Restrepo, and Ole Kiehn, which appeared on pages 5320–5328 of the May 17, 2006 issue, should have been classified as a Behavioral/Systems/Cognitive article and not a Brief Communication.
