NEUROBIOLOGY. For the article “Loss of BETA2/NeuroD leads to malformation of the dentate gyrus and epilepsy” by Min Liu, Samuel J. Pleasure, Abigail E. Collins, Jeffrey L. Noebels, Francesco J. Naya, Ming-Jer Tsai, and Daniel H. Lowenstein, which appeared in number 2, January 18, 2000, of Proc. Natl. Acad. Sci. USA (97, 865–870), the authors note the following correction. The web address displaying video and EEG recordings of NeuroD seizures is http://www.bcm.tmc.edu/neurol/research/neurogenetics/neurod.html.