Correction: In the article “High-Affinity Zinc Inhibition of NMDA NR1–NR2A Receptors,” by P. Paoletti, P. Ascher, and J. Neyton, which appeared on pages 5711–5725 of the August 1, 1997 issue, the authors would like to introduce a correction in the paragraph “Buffered Zn2+ solutions” of Materials and Methods. The added Zn2+ concentration values quoted in this paragraph are valid at pH 7.8, but the experiments presented in the paper were performed at pH 7.3, and the added Zn2+concentrations leading to estimated concentrations of free Zn2+ of 1, 3, 10, 30, 100, 300, and 1000 nmwere in fact 0.1, 0.3, 1.0, 3.0, 10.0, 29.3, and 91.7 μm, respectively.