Cortical signal-in-noise coding varies by noise type, signal-to-noise ratio, age, and hearing status

Nashrah Maamor, Curtis J. Billings

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The purpose of this study was to determine the effects of noise type, signal-to-noise ratio (SNR), age, and hearing status on cortical auditory evoked potentials (CAEPs) to speech sounds. This helps to explain the hearing-in-noise difficulties often seen in the aging and hearing impaired population. Continuous, modulated, and babble noise types were presented at varying SNRs to 30 individuals divided into three groups according to age and hearing status. Significant main effects of noise type, SNR, and group were found. Interaction effects revealed that the SNR effect varies as a function of noise type and is most systematic for continuous noise. Effects of age and hearing loss were limited to CAEP latency and were differentially modulated by energetic and informational-like masking. It is clear that the spectrotemporal characteristics of signals and noises play an important role in determining the morphology of neural responses. Participant factors such as age and hearing status, also play an important role in determining the brain's response to complex auditory stimuli and contribute to the ability to listen in noise.

Original languageEnglish
Pages (from-to)258-264
Number of pages7
JournalNeuroscience Letters
Volume636
DOIs
Publication statusPublished - 1 Jan 2017

Fingerprint

Signal-To-Noise Ratio
Hearing
Noise
Auditory Evoked Potentials
Phonetics
Aptitude
Hearing Loss
Brain
Population

Keywords

  • Aging
  • Cortical auditory evoked potentials
  • Electrophysiology
  • Hearing loss
  • Masking
  • Noise type

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Cortical signal-in-noise coding varies by noise type, signal-to-noise ratio, age, and hearing status. / Maamor, Nashrah; Billings, Curtis J.

In: Neuroscience Letters, Vol. 636, 01.01.2017, p. 258-264.

Research output: Contribution to journalArticle

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