1. Department of Otolaryngology/Head and Neck Surgery, School of Medicine, University of North Carolina, Chapel Hill, North Carolina 27599-7070, USA
2. Laboratoire des Systèmes Perceptifs, Département d'Études Cognitives, Ecole Normale Supérieure, Universite Paris Sciences et Lettres, Centre National de la Recherche Scientifique, Paris, France
3. Laboratoire de Psychologie de la Perception, Université Paris Descartes, Centre National de la Recherche Scientifique, Paris, France
4. Center for Hearing Research, Boys Town National Research Hospital, Omaha, Nebraska 68131, USA