In the article “Hierarchical and Serial Processing in the Spatial Auditory Cortical Pathway Is Degraded by Natural Aging” by Dina L. Juarez-Salinas, James R. Engle, Xochi O. Navarro, and Gregg H. Recanzone, which appeared on pages 14795–14804 of the November 3, 2010 issue, the authors regret that some of the cell numbers reported in Table 1 were wrong. For monkey L, 130 A1 neurons were analyzed, not 131. For monkey G, 149 A1 neurons were analyzed, not 114. These errors do not affect the results, interpretations, or conclusions.