Hair Cells Use Active Zones with Different Voltage Dependence Of
Hair cells use active zones with different voltage PNAS PLUS + dependence of Ca2 influx to decompose sounds into complementary neural codes Tzu-Lun Ohna,b,c,d, Mark A. Rutherforda,e,1, Zhizi Jingb,d,f,1, Sangyong Junga,g,h,1, Carlos J. Duque-Afonsoa,b, Gerhard Hocha, Maria Magdalena Pichera,b, Anja Scharingeri,j, Nicola Strenzkeb,d,f, and Tobias Mosera,b,c,d,g,h,k,2 aInstitute for Auditory Neuroscience & InnerEarLab, University Medical Center Göttingen, 37099 Goettingen, Germany; bGöttingen Graduate School for Neurosciences and Molecular Biosciences, University of Göttingen, 37073 Goettingen, Germany; cBernstein Focus for Neurotechnology, University of Göttingen, 37073 Goettingen, Germany; dCollaborative Research Center 889, University of Göttingen, 37099 Goettingen, Germany; eDepartment of Otolaryngology, Washington University School of Medicine, St. Louis, MO 63110; fAuditory Systems Physiology Group, InnerEarLab, Department of Otolaryngology, University Medical Center Göttingen, 37099 Goettingen, Germany; gSynaptic Nanophysiology Group, Max Planck Institute for Biophysical Chemistry, 37077 Goettingen, Germany; hCenter for Nanoscale Microscopy and Molecular Physiology of the Brain, University of Göttingen, 37073 Goettingen, Germany; iInstitute of Pharmacy, Department of Pharmacology and Toxicology, University of Innsbruck, A-6020 Innsbruck, Austria; jCenter for Chemistry and Biomedicine, University of Innsbruck, A-6020 Innsbruck, Austria; and kBernstein Center for Computational Neuroscience, University of Göttingen, 37073 Goettingen, Germany Edited by A. J. Hudspeth, The Rockefeller University, New York, NY, and approved June 21, 2016 (received for review April 8, 2016) For sounds of a given frequency, spiral ganglion neurons (SGNs) with vidual IHCs (7, 11–14). IHC AZs vary in the number (11, 15) and + different thresholds and dynamic ranges collectively encode the voltage dependence of gating (11) of their Ca2 channels regardless wide range of audible sound pressures.
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