Correction for ‘ ‘ Additional evidence on the use of personal ornaments in the Middle Paleolithic of North Africa

PHARMACOLOGY Correction for ‘‘Selective activation of the M1 muscarinic acetylcholine receptor achieved by allosteric potentiation,’’ by Lei Ma, Matthew Seager, Marion Wittmann, Marlene Jacobson, Denise Bickel, Maryann Burno, Keith Jones, Valerie Kuzmick Graufelds, Guangping Xu, Michelle Pearson, Alexander McCampbell, Renee Gaspar, Paul Shughrue, Andrew Danziger, Christopher Regan, Rose Flick, Danette Pascarella, Susan Garson, Scott Doran, Constantine Kreatsoulas, Lone Veng, Craig W. Lindsley, William Shipe, Scott Kuduk, Cyrille Sur, Gene Kinney, Guy R. Seabrook, and William J. Ray, which appeared in issue 37, September 15, 2009, of Proc Natl Acad Sci USA (106:15950–15955; first published August 26, 2009; 10.1073/ pnas.0900903106). The authors note that the author name Matthew Seager should have appeared as Matthew A. Seager. The online version has been corrected. The corrected author line and related footnotes appear below.