A unifying model for timing of walking onset in humans and other mammals

Author Information Martin Garwicza,1, Maria Christenssona and Elia Psounib,caNeuronano Research Center, BMC F10, Lund University, 221 84 Lund, Sweden; bCenter for Psychology, Kristianstad University, 291 88 Kristianstad, Sweden; and cDepartment of Psychology, Lund University, 221 84 Lund, Sweden Edited by Kristen Hawkes, University of Utah, Salt Lake City, UT, and approved October 28, 2009 (received for review May 26, 2009) Footnotes1To whom correspondence should be addressed. E-mail: martin.garwicz@med.lu.se Author contributions: M.G., M.C., and E.P. designed research; M.G. and M.C. performed research; M.G. and E.P. analyzed data; and M.G., M.C., and E.P. wrote the paper. The authors declare no conflict of interest. This article is a PNAS Direct Submission. This article contains supporting information online at www.pnas.org/cgi/content/full/0905777106/DCSupplemental.