Auditory steady-state responses as neural correlates of loudness growth

Hear Res. 2016 Dec;342:58-68. doi: 10.1016/j.heares.2016.09.009. Epub 2016 Sep 29.

Abstract

The aim of this study was to find an objective estimate of individual, complete loudness growth functions based on auditory steady-state responses. Both normal-hearing and hearing-impaired listeners were involved in two behavioral loudness growth tasks and one EEG recording session. Behavioral loudness growth was measured with Absolute Magnitude Estimation and a Graphic Rating Scale with loudness categories. Stimuli were sinusoidally amplitude-modulated sinusoids with carrier frequencies of either 500 Hz or 2000 Hz, a modulation frequency of 40 Hz, a duration of 1 s, and presented at intensities encompassing the participants' dynamic ranges. Auditory steady-state responses were evoked by the same stimuli using durations of at least 5 min. Results showed that there was a good correspondence between the relative growth of the auditory steady-state response amplitudes and the behavioral loudness growth responses for each participant of both groups of listeners. This demonstrates the potential for a more individual, objective, and automatic fitting of hearing aids in future clinical practice.

Keywords: Auditory steady-state responses; Fitting of hearing aids; Loudness growth functions; Objective measure.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acoustic Stimulation
  • Adult
  • Aged
  • Aged, 80 and over
  • Auditory Perception / physiology
  • Auditory Threshold / physiology
  • Electroencephalography
  • Evoked Potentials, Auditory
  • Evoked Potentials, Auditory, Brain Stem
  • Female
  • Hearing Aids
  • Hearing Loss / physiopathology
  • Hearing Loss / therapy
  • Humans
  • Loudness Perception / physiology*
  • Male
  • Middle Aged
  • Psychoacoustics
  • Young Adult