The Mammalian Auditory Pathway: Neuroanatomy

Volume 1 of the series Springer Handbook of Auditory Research pp 410-448

Organization of Olivocochlear Efferent Systems in Mammals

  • W. Bruce Warr

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The decade of the eighties witnessed important advances in our under-standing of virtually every aspect of hearing, including the basic innervation pattern of the organ of Corti. With the aid of such powerful techniques as retrograde and anterograde transport of tracers, anatomical reconstruction from serial images, the combination of single unit electrophysiology with intracellular fiber staining and immunocytochemical localization of neuroactive substances, these research endeavors revealed a quite unexpected degree of specificity in the detailed anatomy of various types of auditory neurons, both afferent and efferent. Taken in their entirety, these new findings have required major modifications in our views of the underlying neuronal mechanisms involved in the process of hearing.