Correction: In the article “Progressive and Lasting Amplification of Accumbal Nicotine-Seeking Neural Signals” by Karine Guillem and Laura L. Peoples, which appeared on pages 276–286 of the January 6, 2010 issue, one of the grants listed was incorrect: funding was provided by National Institute on Drug Abuse Grant P50 CA/DA84718, not by National Cancer Institute Grant 4100020574. The authors regret this error.
