Dev127316 2385..2385

Adaptation is not required to explain the long-term response of axons to molecular gradients Jun Xu1, William J. Rosoff1, Jeffrey S. Urbach2 and Geoffrey J. Goodhill3,* Department of Neuroscience, Georgetown University Medical Center, 3900 Reservoir Road NW, Washington, DC 20007, USA Department of Physics, Georgetown University, 37th and O Streets NW, Washington, DC 20057, USA Queensland Brain Institute, Department of Mathematics and Institute for Molecular Bioscience, University of Queensland, St Lucia, QLD 4072, Australia There was an error published in Development 132, 4545-4552. The sentence on page 4550 ‘Following Berg and Purcell (Berg and Purcell, 1977), threshold detection of the gradient occurs when: biðtÞ 1⁄4 X