Cochlear efferents in developing adult and pathological conditions

Autor: Jean-Luc Puel, Régis Nouvian, Michel Eybalin
Přispěvatelé: Institut des Neurosciences de Montpellier - Déficits sensoriels et moteurs (INM), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)
Rok vydání: 2014
Předmět:
Zdroj: Cell and Tissue Research
Cell and Tissue Research, Springer Verlag, 2015, 361 (1), pp.301-309. ⟨10.1007/s00441-015-2158-z⟩
ISSN: 1432-0878
0302-766X
DOI: 10.1007/s00441-015-2158-z⟩
Popis: Cochlear activity is regulated by the olivo-cochlear bundle, which originates from the brainstem and projects onto the hair cells and auditory nerve fibers. Two efferent components can be distinguished: the medial and lateral olivo-cochlear efferent originating from the medial, and the lateral nuclei of the superior olivary complex. The input of the efferent systems on hair cells occurs during development and persists in the adult cochlea. Recent studies have shown that the efferent innervations are required to set the activity pattern in developing hair cells and auditory nerve fibers and to protect the synaptic structures in adult cochlea. In addition, efferent innervations undergo plasticity during pathological conditions such as noise-trauma or aging. This review discusses the mechanisms underlying the control of the hair cells and afferent fibers excitability by efferent neurons and their putative role in developing adult and pathological conditions.
Databáze: OpenAIRE
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