In the article “Spontaneous Opening of T-Type Ca2+ Channels Contributes to the Irregular Firing of Dopamine Neurons in Neonatal Rats,” by Guohong Cui, Takashi Okamoto, and Hitoshi Morikawa, which appeared on pages 11079-11087 of the December 8, 2004 issue, a sentence on page 11085 was modified incorrectly by the printer. In the fifth paragraph of the Discussion, the sixth sentence should read as follows: “The activation threshold for T-type channels is -70 to -60 mV, whereas they become fully inactivated at -40 to -30 mV (Randall and Tsien, 1997; Perez-Reyes, 2003).”
