• Neuroscience · Dec 2014

    Review

    Loudness modulation after transient and permanent hearing loss: implications for tinnitus and hyperacusis.

    • P Fournier, M Schönwiesner, and S Hébert.
    • School of Speech Pathology and Audiology, Université de Montréal, Montréal, Québec, Canada; International Laboratory for Research on Brain, Music, and Sound (BRAMS), Université de Montréal, Montréal, Québec, Canada; Centre de recherche de l'Institut Universitaire de Gériatrie de Montréal (CRIUGM), Montréal, Québec, Canada.
    • Neuroscience. 2014 Dec 26;283:64-77.

    AbstractLoudness is the primary perceptual correlate of sound intensity. The relationship between sound intensity and loudness is not fixed, and can be modified by short-term sound deprivation or stimulation. Deprivation increases sound sensitivity, whereas stimulation decreases it. We review the effects of short-term auditory deprivation and stimulation on the auditory central nervous system of humans and animals, and we extend the discussion to permanent auditory deprivation (hearing loss) and auditory pathologies of loudness perception. Although there is sufficient evidence to conclude that loudness can be modulated in normal hearing listeners by temporary sound deprivation and stimulation, evidence is scanter for the hearing-impaired listeners. In addition, cortical effects of sound deprivation and stimulation in humans, which may correlate with loudness coding, are still largely unknown and should be the target of future research.Copyright © 2014 IBRO. Published by Elsevier Ltd. All rights reserved.

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