Correction

NEUROSCIENCE. For the article “Contribution of inhibitory mechanisms to direction selectivity and response normalization in macaque middle temporal area,” by A. Thiele, C. Distler, H. Korbmacher, and K.-P. Hoffmann, which appeared in issue 26, June 29, 2004, of Proc. Natl. Acad. Sci. USA (101, 9810–9815; first published June 21, 2004; 10.1073/pnas.0307754101), the authors note that the word “baclofen” should read “saclofen” in line 18 in the right column on page 9815.