Sensory Inhibition Is Related to Variable Speech Perception in Noise in Adults With Normal Hearing.

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  • Additional Information
    • Affiliation:
      Department of Communication Sciences and Disorders, Central Sensory Processes Laboratory, The University of Texas at Austin
    • Subject Terms:
    • Subject Terms:
    • Abstract:
      Purpose: Speech perception in noise (SPiN) varies widely in individuals with normal hearing, which may be attributed to factors that are not reflected in the audiogram, such as inhibition. However, inhibition is involved at both sensory and cognitive stages of auditory perception, and while inhibition at the cognitive level has been shown to be a significant factor in SPiN processes, it is unknown whether sensory inhibition may also contribute to SPiN variability. Therefore, the goal of this study was to evaluate sensory inhibition in adults with normal hearing and mild SPiN impairment. Method: Cortical auditory evoked potentials (CAEPs) were recorded in 49 adults via high-density electroencephalography using an auditory gating paradigm. Participants were categorized according to a median signal-to-noise ratio (SNR) loss of 1.5 dB: typical SNR loss = 1.5 dB (n = 32), mild SNR loss > 1.5 dB (n = 17). CAEP gating responses were compared and correlated with SNR loss and extended high-frequency thresholds. Current density reconstructions were performed to qualitatively observe underlying cortical inhibitory networks in each group. Results: In comparison to adults with typical SPiN ability, adults with mild SPiN impairment showed an absence of the gating response. A CAEP gating component (P2) reflected decreased sensory inhibition and correlated with increased SNR loss. Extended high-frequency thresholds were also found to correlate with SNR loss, but not gating function. An atypical cortical inhibitory network was observed in the mild SNR loss group, with reduced frontal and absent prefrontal activation. Conclusion: Sensory inhibition appears to be atypical and related to SPiN deficits in adults with mild impairment. In addition, cortical inhibitory networks appear to be incomplete, with a possible compensatory parietal network. Further research is needed to delineate between types or levels of central inhibitory mechanisms and their contribution to SPiN processes.
    • Journal Subset:
      Allied Health; Peer Reviewed; USA
    • Instrumentation:
      Quick Speech-in-Noise test (Killion et al.)
    • ISSN:
      1092-4388
    • MEDLINE Info:
      NLM UID: 9705610
    • Grant Information:
      This work was supported by the Hearing Health Foundation Emerging Research Grant (2016) through the Les Paul Foundation and the Texas Speech-Language-Hearing Foundation Lear Ashmore Research Fund (2016).
    • Publication Date:
      20200710
    • Publication Date:
      20200711
    • DOI:
      http://dx.doi.org/10.1044/2020_JSLHR-19-00261
    • Accession Number:
      143772197
  • Citations
    • ABNT:
      CAMPBELL, J. et al. Sensory Inhibition Is Related to Variable Speech Perception in Noise in Adults With Normal Hearing. Journal of Speech, Language & Hearing Research, [s. l.], v. 63, n. 5, p. 1595–1607, 2020. DOI 10.1044/2020_JSLHR-19-00261. Disponível em: http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=rzh&AN=143772197. Acesso em: 10 ago. 2020.
    • AMA:
      Campbell J, Nielsen M, LaBrec A, Bean C. Sensory Inhibition Is Related to Variable Speech Perception in Noise in Adults With Normal Hearing. Journal of Speech, Language & Hearing Research. 2020;63(5):1595-1607. doi:10.1044/2020_JSLHR-19-00261
    • APA:
      Campbell, J., Nielsen, M., LaBrec, A., & Bean, C. (2020). Sensory Inhibition Is Related to Variable Speech Perception in Noise in Adults With Normal Hearing. Journal of Speech, Language & Hearing Research, 63(5), 1595–1607. https://doi.org/10.1044/2020_JSLHR-19-00261
    • Chicago/Turabian: Author-Date:
      Campbell, Julia, Mashhood Nielsen, Alison LaBrec, and Connor Bean. 2020. “Sensory Inhibition Is Related to Variable Speech Perception in Noise in Adults With Normal Hearing.” Journal of Speech, Language & Hearing Research 63 (5): 1595–1607. doi:10.1044/2020_JSLHR-19-00261.
    • Harvard:
      Campbell, J. et al. (2020) ‘Sensory Inhibition Is Related to Variable Speech Perception in Noise in Adults With Normal Hearing’, Journal of Speech, Language & Hearing Research, 63(5), pp. 1595–1607. doi: 10.1044/2020_JSLHR-19-00261.
    • Harvard: Australian:
      Campbell, J, Nielsen, M, LaBrec, A & Bean, C 2020, ‘Sensory Inhibition Is Related to Variable Speech Perception in Noise in Adults With Normal Hearing’, Journal of Speech, Language & Hearing Research, vol. 63, no. 5, pp. 1595–1607, viewed 10 August 2020, .
    • MLA:
      Campbell, Julia, et al. “Sensory Inhibition Is Related to Variable Speech Perception in Noise in Adults With Normal Hearing.” Journal of Speech, Language & Hearing Research, vol. 63, no. 5, May 2020, pp. 1595–1607. EBSCOhost, doi:10.1044/2020_JSLHR-19-00261.
    • Chicago/Turabian: Humanities:
      Campbell, Julia, Mashhood Nielsen, Alison LaBrec, and Connor Bean. “Sensory Inhibition Is Related to Variable Speech Perception in Noise in Adults With Normal Hearing.” Journal of Speech, Language & Hearing Research 63, no. 5 (May 2020): 1595–1607. doi:10.1044/2020_JSLHR-19-00261.
    • Vancouver/ICMJE:
      Campbell J, Nielsen M, LaBrec A, Bean C. Sensory Inhibition Is Related to Variable Speech Perception in Noise in Adults With Normal Hearing. Journal of Speech, Language & Hearing Research [Internet]. 2020 May [cited 2020 Aug 10];63(5):1595–607. Available from: http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=rzh&AN=143772197