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CC BY-NC-ND 4.0 · Int Arch Otorhinolaryngol 2021; 25(04): e517-e521
DOI: 10.1055/s-0040-1718525
Original Research

Frequency-Following Response (FFR) in Military Pilots

Graziela Maria Martins-Moreira 
1   School of Medical Sciences, Santa Casa de Sao Paulo, São Paulo, SP, Brazil
2   Marinha do Brasil, Brazil
,
Alessandra Spada Durante 
1   School of Medical Sciences, Santa Casa de Sao Paulo, São Paulo, SP, Brazil
› Institutsangaben Funding This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.
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Abstract

Introduction Good hearing in pilots, including central auditory skills, is critical for flight safety and the prevention of aircraft accidents. Pure tone audiometry alone may not be enough to assess hearing in the members of this population who, in addition to high noise levels, routinely face speech recognition tasks in non-ideal conditions.

Objective To characterize the frequency-following response (FFR) of a group of military pilots compared with a control group.

Methods Twenty military pilots in the Study Group and 20 non-pilot military personnel, not exposed to noise in their work, in the Control Group, all with normal hearing, aged between 30 and 40 years old, completed a questionnaire to assess their hearing habits, and their FFRs were measured with a /da/ syllable (duration 40 milliseconds, speed 10.9/s), at 80 dB NA in the right ear. All procedures were approved by the ethical committee of the institution. Statistical analysis was performed using the t-Student or Mann-Whitney tests for quantitative variables, and the Fisher or chi-squared tests for qualitative variables, and a value of p < 0.05 was considered to be statistically significant.

Results There was no significant difference between the groups regarding auditory habits. In the FFR, wave amplitudes A (p = 0.01) and C (p = 0.04) were significantly lower in the Study Group.

Conclusion Working as a military pilot can be a crucial factor in determining an individual's typical FFR pattern, demonstrated in the present study by statistically significant reductions in the amplitudes of the A and C waves.

Keywords

hearing - electrophysiology - cochlear nerve - brainstem auditory evoked potentials - speech perception


Publikationsverlauf

Eingereicht: 04. November 2019

Angenommen: 05. August 2020

Artikel online veröffentlicht:
08. Dezember 2020

© 2020. Fundação Otorrinolaringologia. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commecial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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  • References

  • 1 Brasil. Agencia Nacional de Aviação Civil. Regulamento Brasileiro da Aviação Civil - RBAC n° 67. Resolução n° 211, de 7 de dezembro de 2011 [Emenda 00], Resolução n° 420, de 21 de maio de 2017 [Emenda 01]. Disponível em: Acessed on 05/15/2019 http://www.anac.gov.br/assuntos/legislacao/legislacao-1/boletim-de-pessoal/2017/17s1/anexo-ii-rbac-no-67-emenda-no-01/view
  • 2 Brasil. Ministério da Defesa. Instrução do Comando da Aeronáutica - ICA 160–1, 2003
  • 3 Brasil. Ministério da Defesa. Instrução do Comando da Aeronáutica - ICA 160–6, 2013
  • 4 Kuronen P, Toppila E, Starck J, Pa A Kko Nen R, Sorri MJ. Modelling the risk of noise-induced hearing loss among military pilots. Int J Audiol 2004; 43: 79-84
    CrossrefPubMedGoogle Scholar
  • 5 Tobias JV. Binaural processing of speech in light aircraft. Technical Report n° FAA-AM-72–31. 1972. Washington, DC: Office of Aviation Medicine, Federal Aviation Administration; 1-6
    Google Scholar
  • 6 Lahtinen TM, Huttunen KH, Kuronen PO, Sorri MJ, Leino TK. Radio speech communication problems reported in a survey of military pilots. Aviat Space Environ Med 2010; 81 (12) 1123-1127
    CrossrefPubMedGoogle Scholar
  • 7 Matschke RG. [Communication and noise. Speech intelligibility of airplane pilots with and without active noise compensation]. HNO 1994; 42 (08) 499-504
    PubMedGoogle Scholar
  • 8 Yankaskas K. Prelude: noise-induced tinnitus and hearing loss in the military. Hear Res 2013; 295: 3-8
    CrossrefPubMedGoogle Scholar
  • 9 Wagstaff AS, Woxen OJ. Double hearing protection and Speech Intelligibility -Room for Improvement, RTO MP-19. In: Organização do Tratado do Atlântico Norte (RTO Meeting Proceedings 19): Current Aeromedical Issues in Rotary Wing Operation. 1998;MP-19, 33–31–33–35
    Google Scholar
  • 10 Mozo BT, Gordon E, Murphy BA. An insert hearing protector with voice communications capability RTO. In: Organização do Tratado do Atlântico Norte (RTO Meeting Proceedings 19): Current Aeromedical Issues in Rotary Wing Operation. 1998; MP-19, 34–31–34–34
    Google Scholar
  • 11 Falcão TP, Luiz RR, Schütz GE, Mello MGS, Câmara VM. Perfil audiométrico segundo exposição de pilotos civis ao ruído. Rev Saude Publica 2014; 48: 790-796
    CrossrefPubMedGoogle Scholar
  • 12 Santos CCS, Juchem LS, Rossi AG. Processamento auditivo de militares expostos a ruído ocupacional. Rev CEFAC 2008; 10: 92-103
    CrossrefGoogle Scholar
  • 13 Kujala T, Shtyrov Y, Winkler I. et al. Long-term exposure to noise impairs cortical sound processing and attention control. Psychophysiology 2004; 41 (06) 875-881
    CrossrefPubMedGoogle Scholar
  • 14 Eggermont JJ. Effects of long-term non-traumatic noise exposure on the adult central auditory system. Hearing problems without hearing loss. Hear Res 2017; 352: 12-22
    CrossrefPubMedGoogle Scholar
  • 15 Le Prell CG, Brungart DS. Speech-in-Noise Tests and Supra-threshold Auditory Evoked Potentials as Metrics for Noise Damage and Clinical Trial Outcome Measures. Otol Neurotol 2016; 37 (08) e295-e302
    CrossrefPubMedGoogle Scholar
  • 16 Hope AJ, Luxon LM, Bamiou DE. Effects of chronic noise exposure on speech-in-noise perception in the presence of normal audiometry. J Laryngol Otol 2013; 127 (03) 233-238
    CrossrefPubMedGoogle Scholar
  • 17 Skoe E, Krizman J, Anderson S, Kraus N. Stability and plasticity of auditory brainstem function across the lifespan. Cereb Cortex 2015; 25 (06) 1415-1426
    CrossrefPubMedGoogle Scholar
  • 18 Kraus N, Anderson S, White-Schwoch T. The Frequency-Following Response: a window into human communication. In: Kraus N, Anderson S, White-Schwoch T, Fay RR, Popper AN. eds. The Frequency-Following Response: A Window into Human Communication. Springer; 2017: 1-15
    CrossrefGoogle Scholar
  • 19 Skoe E, Kraus N. Auditory brain stem response to complex sounds: a tutorial. Ear Hear 2010; 31 (03) 302-324
    CrossrefPubMedGoogle Scholar
  • 20 White-Schwoch T, Kraus N. The Janus face of auditory learning. How life in sound shapes everyday communication. In: Kraus N. eds. The Frequency-Following Response: A Window into Human Communication. Springer; 2017: 121-158
    Google Scholar
  • 21 Chandrasekaran B, Kraus N. The scalp-recorded brainstem response to speech: neural origins and plasticity. Psychophysiology 2010; 47 (02) 236-246
    CrossrefPubMedGoogle Scholar
  • 22 Wible B, Nicol T, Kraus N. Atypical brainstem representation of onset and formant structure of speech sounds in children with language-based learning problems. Biol Psychol 2004; 67 (03) 299-317
    CrossrefPubMedGoogle Scholar
  • 23 Krizman J, Skoe E, Kraus N. Sex differences in auditory subcortical function. Clin Neurophysiol 2012; 123 (03) 590-597
    CrossrefPubMedGoogle Scholar
  • 24 Rocha-Muniz CN, Filippini R, Neves-Lobo IF. et al. O Potencial Evocado Auditivo com estímulo de fala pode ser uma ferramenta útil na prática clínica?. CoDAS 2016; 28: 77-80
    CrossrefPubMedGoogle Scholar
  • 25 Fillipini R, Schochat E. Potenciais evocados auditivos de tronco encefálico com estímulo de fala no transtorno do processamento auditivo. Rev Bras Otorrinolaringol (Engl Ed) 2009; 75: 449-455
    Google Scholar
  • 26 Smith SB, Krizman J, Liu C, White-Schwoch T, Nicol T, Kraus N. Investigating peripheral sources of speech-in-noise variability in listeners with normal audiograms. Hear Res 2019; 371: 66-74
    CrossrefPubMedGoogle Scholar
  • 27 Silman S, Silverman CA. Basic audiologic testing. In: Silman S, Silverman CA. eds. Auditory diagnosis: principles and applications. San Diego: Singular Publishing Group; 1997: 44-52
    Google Scholar
  • 28 Paradise JL, Smith CG, Bluestone CD. Tympanometric detection of middle ear effusion in infants and young children. Pediatrics 1976; 58 (02) 198-210
    CrossrefPubMedGoogle Scholar
  • 29 Gorga MP, Neely ST, Bergman BM. et al. A comparison of transient-evoked and distortion product otoacoustic emissions in normal-hearing and hearing-impaired subjects. J Acoust Soc Am 1993; 94 (05) 2639-2648
    CrossrefPubMedGoogle Scholar
  • 30 Kampel-Furman L, Joachims Z, Bar-Cohen H. et al. Hearing threshold shifts among military pilots of the Israeli Air Force. J R Army Med Corps 2018; 164 (01) 46-51
    CrossrefPubMedGoogle Scholar
  • 31 Anderson S, Parbery-Clark A, White-Schwoch T, Kraus N. Auditory brainstem response to complex sounds predicts self-reported speech-in-noise performance. J Speech Lang Hear Res 2013; 56 (01) 31-43
    CrossrefPubMedGoogle Scholar
  • 32 Russo N, Nicol T, Musacchia G, Kraus N. Brainstem responses to speech syllables. Clin Neurophysiol 2004; 115 (09) 2021-2030
    CrossrefPubMedGoogle Scholar