Bilateral or unilateral amplification: Is there a difference? A brief tutorial

References

• Arkebauer H.J., Mencher G.T., McCall C. Modification of speech discrimination in patients with binaural asymmetrical hearing loss. J Speech Hear Disord 1971; 36: 208–212
   PubMedGoogle Scholar
• Balfour P.B., Hawkins D.B. A comparison of sound quality judgments for monaural and binaural hearing aid processed stimuli. Ear Hear 1992; 13: 331–339
   PubMed Web of Science ®Google Scholar
• Behrenth, E. 1989. Hearing aids as a good therapeutic alternative in tinnitus. [Article in Swedish]. Lakartidningen, 86(20):1884–5, (Referenced from PubMed website:, http://www.ncbi.nlm.nih.gov/entrez/query.fcgi.
   Google Scholar
• Belzile M., Markle D.M. A clinical comparison of monaural and binaural hearing aids worn by patients with conductive or perceptive deafness. Laryngoscope 1959; 69: 1317–1323
   PubMedGoogle Scholar
• Bentler R.A., Palmer C., Dittberner A.B. Hearing in noise: comparison of listeners with normal and (aided) impaired hearing. J Am Acad Audiol 2004; 15: 216–225
   PubMedGoogle Scholar
• Blauert J., Lindemann W. Auditory spaciousness: some further psychoacoustic analyses. J Acoust Soc Am 1986; 80: 533–542
   PubMedGoogle Scholar
• Brooks D.N., Bulmer D. Survey of Binaural Hearing Aid Users. Ear Hear 1981; 2: 220–224
   PubMed Web of Science ®Google Scholar
• Butler R.A. Asymmetric performances in monaural localization of sound in space. Neuropsych 1994; 32: 221–229
   Google Scholar
• Byrne D. Clinical issues and options in binaural hearing aid fitting. Ear Hear 1981; 2: 187–193
   PubMed Web of Science ®Google Scholar
• Byrne, D. & Dirks, D. 1996. Effects of acclimatization and deprivation on non-speech abilities. Ear Hear Suppl, 29S–37S.
   Google Scholar
• Byrne D., Noble W., Glauerdt B. Effects of earmold type on ability to locate sounds when wearing hearing aids. Ear Hear 1996; 17: 218–228
   PubMed Web of Science ®Google Scholar
• Byrne D., Noble W., Lepage B. Effects of long-term bilateral and unilateral fitting of different hearing aid types on the ability to locate sounds. J Am Acad Audiol 1992; 3: 369–382
   PubMedGoogle Scholar
• Carhart R. Selection of Hearing Aids. Arch of Otolaryngol 1946; 44: 1–18
   PubMed Web of Science ®Google Scholar
• Carter A.S., Noe C.M., Wilson R.H. Listeners who prefer monaural to binaural hearing aids. J Am Acad Audiol 2001; 12: 262–272
   Google Scholar
• Causey G.D., Bender D.R. Clinical studies in binaural amplification. Binaural Hearing and Amplification Volume II, ER Libby. Zenetron, Chicago 1980; 75–96
   Google Scholar
• Causse, R. & Chavasse, P. 1941. Recheerches sur le Seuil de l'audition binauriculaire compare au seuil monauriculaire. C.R. Soc. Biol, 135:1272–1275. Cited in Harris JD, Psycho-Acoustics and neurophysiology of binaural hearing. In ER Libby (ed.), 1980. Binaural Hearing and Amplification Volume II. Chicago: Zenetron, pp. 37–57.
   Google Scholar
• Chmiel R., Jerger J., Murphy E., Pirozzolo F., Tooley-Young C. Unsuccessful use of binaural amplification by an elderly person. J Am Acad Audiol 1997; 8: 1–10
   PubMedGoogle Scholar
• Chocholle, R. 1954. Etude statistique des seuils auditifs monauraux et binauraux; interpretations des resultants. Acustica. 4:341–351. Cited in Harris JD, Psycho-Acoustics and neurophysiology of binaural hearing. In ER Libby (ed.), 1980. Binaural Hearing and Amplification Volume II. (Chicago: Zenetron), pp. 37–57.
   Google Scholar
• Chung S., Stephens S.D.G. Factors influencing binaural hearing aid use. Br J of Audiol 1986; 20: 129–140
   PubMedGoogle Scholar
• Chung, S. & Stephens, S.D.G. 1983. Binaural hearing aid use and the hearing measurement scale. IRCS Medical Science, 11:721–722. In W Noble, 1998. Self Assessment of Hearing and Related Functions, (London: Whurr).
   Google Scholar
• Cox R.M., Alexander G.C. The Abbreviated Profile of Hearing Aid Benefit (APHAB). Ear Hear 1995; 16: 176–186
   PubMed Web of Science ®Google Scholar
• Cox R.M., Alexander G.C. Measuring satisfaction with amplification in daily life: The SADL scale. Ear Hear 1999; 20: 306–320
   PubMed Web of Science ®Google Scholar
• Cox R.M., Alexander G.C. The International Outcome Inventory for Hearing Aids (IOI-HA): psychometric properties of the English version. Int J Audiol 2002; 41: 30–35
   PubMed Web of Science ®Google Scholar
• Cox R., Hyde M., Gatehouse S., Noble W., Dillon H., Bentler R., et al. Optimal outcome measures, research priorities, and international cooperation. Ear Hear Suppl 2000; 21: 106S–115S
   PubMed Web of Science ®Google Scholar
• Cox R.M., Stephens D., Kramer S.E. Translations of the International Outcome Inventory for Hearing Aids (IOI-HA). Int J Audiol 2002; 41: 3–26
   PubMed Web of Science ®Google Scholar
• Day G.A., Browning G.G., Gatehouse S. Benefit from binaural hearing aids in individuals with a severe hearing impairment. Br J of Audiol 1988; 22: 273–277
   PubMedGoogle Scholar
• DeCarlo L.M., Brown W.J. The effectiveness of binaural hearing for adults with hearing impairment. J Aud Res 1960; 1: 35–76
   Google Scholar
• Dermody P., Byrne D. Auditory localization by hearing-impaired persons using binaural in-the-ear aids. Br J of Audiol 1995; 9: 93–101
   Google Scholar
• Dillon H. Hearing Aids. Turramurra, Australia, Boomerang Press 2001
   Google Scholar
• Dillon H., Birtles G., Lovegrove R. Measuring the outcomes of a national rehabilitation program: Normative data for the Client Oriented Scale of Improvement (COSI) and the Hearing Aid Users Questionnaire (HAUQ). J Am Acad Audiol 1999; 10: 67–79
   Google Scholar
• Dillon H., James A., Ginis J. Client oriented scale of improvement (COSI) and its relationship to several other measures of benefit and satisfaction provided by hearing aids. J Am Acad Audiol 1997; 8: 27–43
   PubMedGoogle Scholar
• Dirks D., Carhart R. A survey of reactions of users of binaural and monaural hearing aids. J Sp Hear Disord 1962; 27: 311–322
   PubMedGoogle Scholar
• Duda, R.O. 1998. San Jose State Website:, , http://www-engr.sjsu.edu/∼duda/Duda.R.GSLM.frameset.html.
   Google Scholar
• Dutt S.N., McDermott A.L., Irving R.M., Donaldson I., Pahor A.L., Proops D.W. Prescription of binaural hearing aids in the United Kingdom: a Knowledge, attitude and practice (KAP) study. J Laryngol Otol Suppl 2002; 28: 2–6
   Google Scholar
• Erdman S., Sedge R. Subjective comparisons of binaural versus monaural amplification. Ear Hear 1981; 2: 225–229
   PubMed Web of Science ®Google Scholar
• Gatehouse, S. & Noble, W. 2004a. Personal Communication.
   Google Scholar
• Gatehouse S., Noble W. The Speech, Spatial and Qualities of Hearing Scale (SSQ). Int J Audiol 2004b; 43: 85–99
   PubMed Web of Science ®Google Scholar
• Gatehouse S. The Glasgow Hearing Aid Benefit Profile: What it measures and how to use it. Hear J 2000; 53: 10–18
   Google Scholar
• Gatehouse S. Glasgow Hearing Aid Benefit Profile: derivation and validation of a client-centered outcome measure for hearing aid services. J Am Acad Audiol 1999; 10: 80–103
   Google Scholar
• Gatehouse S. Components and determinants of hearing aid benefit. Ear Hear 1994; 15: 30–49
   PubMed Web of Science ®Google Scholar
• Gatehouse S. The time course and magnitude of perceptual acclimatization to frequency responses: evidence from monaural fitting of hearing aids. J Acoust Soc Am 1992; 92: 1258–1268
   PubMed Web of Science ®Google Scholar
• Gatehouse S. Apparent auditory deprivation effects of late onset: the role of presentation level. J Acoust Soc Am 1989; 86: 2103–2106
   PubMed Web of Science ®Google Scholar
• Gelfand S., Silman S. Apparent auditory deprivation in children: implications of monaural versus binaural amplification. J Am Acad Audiol 1993; 4: 313–318
   PubMedGoogle Scholar
• Gelfand S., Silman S., Ross L. Long-term effects of monaural, binaural and no amplification in subjects with bilateral hearing loss. Scan Audiol 1987; 16: 201–207
   PubMed Web of Science ®Google Scholar
• Hawkins D.B., Naidoo S.V. Comparison of sound quality and clarity with asymmetrical peak clipping and output limiting compression. J Am Acad Audiol 1994; 5: 356–358
   PubMedGoogle Scholar
• Hebrank J., Wright D. Spectral cues used in the localization of sound sources on the median plane. J Acoust Soc Am 1974; 56: 1829–1834
   PubMed Web of Science ®Google Scholar
• Hedgecock L.D., Sheets B.V. A comparison of monaural and binaural hearing aids for listening to speech. Arch of Otolaryn 1958; 68: 624–629
   Web of Science ®Google Scholar
• Hirsh I.J. The influence of interaural phase and interaural summation and inhibition. J Acoust Soc Am 1948; 20: 196–200
   Google Scholar
• Hirsh I.J. The relationship between localization and intelligibility. J Acoust Soc Am 1950; 22: 196–200
   Web of Science ®Google Scholar
• Hood J.D., Prasher D.K. Effect of simulated bilateral cochlear distortion on speech discrimination in normal subjects. Scan Audiol 1990; 19: 37–41
   PubMed Web of Science ®Google Scholar
• Humes L.E. Dimensions of hearing aid outcome. J Am Acad Audiol 1999; 10: 26–39
   PubMedGoogle Scholar
• Hurley R.M. Onset of auditory deprivation. J Am Acad Audiol 1999; 10: 529–534
   PubMedGoogle Scholar
• Hurley R.M. Is the unaided ear effect independent of aging?. J Am Acad Audiol 1998; 9: 20–24
   PubMedGoogle Scholar
• Jerger, J., Silman, S., Lew, H.L. & Chmiel, R. 1993. Case Studies in binaural interference: Converging evidence from behavioral and electrophysiologic measures. J Am Acad Audiol, 122–131.
   PubMedGoogle Scholar
• Jerger J., Carhart R., Dirks D. Binaural hearing aids and speech intelligibility. J Speech Hear Res 1961; 4: 137–148
   PubMedGoogle Scholar
• Jerger J., Dirks D. Binaural hearing aids: An enigma. J Acoust Soc Am 1961; 33: 537–538
   Web of Science ®Google Scholar
• Joint Nordic-British project. 2001. Hearing Impairment Among Adults (HIA). [ISBN 951-33-0534-1]
   Google Scholar
• Kimberley B., Dymond R., Gamer A. Bilateral digital hearing aids for binaural hearing. ENT J 1994; 73: 176–179
   Google Scholar
• Kobler S., Rosenhall U. Horizontal localization and speech intelligibility with bilateral and unilateral hearing aid amplification. Int J Audiol 2002; 41: 395–400
   PubMed Web of Science ®Google Scholar
• Kobler S., Rosenhall U., Hansson H. Bilateral hearing aids – effects and consequences from a user perspective. Scan Audiol 2001; 30: 223–235
   PubMed Web of Science ®Google Scholar
• Kochkin S. Customer satisfaction with single and multiple microphone digital hearing aids. Hear Review 2000; 7: 24–29
   Google Scholar
• Kramer S.E., Goverts S.T., Dreschler W.A., Boymans M., Festen J.M. International Outcome Inventory for Hearing Aids (IOI-HA): results from The Netherlands. Int J Audiol 2002; 41: 36–41
   PubMed Web of Science ®Google Scholar
• Leekuw A., Dreschler W. Advantages of directional hearing aid microphones related to room acoustics. Audiology 1991; 30: 330–344
   PubMedGoogle Scholar
• Libby E.R. Editorial: Binaural amplification – State of the Art. Ear Hear 1981; 2: 183–186
   PubMedGoogle Scholar
• Licklider J.C.R. The influence of interaural phase relations upon the masking of speech by white noise. J Acoust Soc Am 1948; 20: 150–159
   Web of Science ®Google Scholar
• Lyregaard P.E. Frequency selectivity and speech intelligibility in noise. Scan Audiol Suppl 1982; 15: 113–22
   PubMedGoogle Scholar
• Markides A. Binaural Hearing Aids. Academic Press, NY 1980
   Google Scholar
• Markle D.M., Aber W. A clinical evaluation of monaural and binaural hearing aids. Arch Otolaryn 1958; 67: 606–608
   Web of Science ®Google Scholar
• Mehrgardt S., Mellert V. Transformation characteristics of the external human ear. J Acoust Soc Am 1977; 61: 1567–1576
   PubMed Web of Science ®Google Scholar
• Melin L., Scott B., Lindberg P., Lyttkens L. Hearing aids and tinnitus – an experimental group study. Br J Audiol 1987; 21: 91–97
   PubMedGoogle Scholar
• Middlebrooks J.C., Green D.M. Sound localization by human listeners. Ann Rev Psy 1991; 42: 135–159
   PubMed Web of Science ®Google Scholar
• Mills A.W. Auditory Localization. Foundations of Modern Auditory Theory, JV Tobias. Academic Press, NY 1972; 303–348
   Google Scholar
• Mills A.W. On the minimum audible angle. J Acoust Soc Am 1958; 30: 237–246
   Web of Science ®Google Scholar
• Naidoo S.V., Hawkins D.B. Monaural/binaural preferences: effect of hearing aid circuit on speech intelligibility and sound quality. J Am Acad Audiol 1997; 8: 188–202
   PubMedGoogle Scholar
• Noble, W. 1998. Self Assessment of Hearing and Related Functions. (London: Whurr).
   Google Scholar
• Noble W., Byrne D., Lepage B. Effects on sound localization of configuration and type of hearing impairment. J Acoust Soc Am 1994; 95: 992–1005
   PubMed Web of Science ®Google Scholar
• Noble W., Byrne D., &Ter-Horst K. Auditory localization, detection of spatial separateness, speech hearing in noise by hearing-impaired listeners. J Acoust Soc Am 1997; 102: 2343–2352
   PubMed Web of Science ®Google Scholar
• Noble W., Gatehouse S. Interaural asymmetry of hearing loss, Speech, Spatial and Qualities of Hearing Scale (SSQ) disabilities and handicap. Int J Audiol 2004; 43: 100–114
   PubMed Web of Science ®Google Scholar
• Noble W., Sinclair S., Byrne D. Improvement in aided sound localization with open earmolds: Observations in people with high-frequency hearing loss. J Am Acad Audiol 1998; 9: 25–34
   PubMedGoogle Scholar
• Olsen W.R., Carhart R. Development of test procedures for evaluation of binaural hearing aids. Bul Prosth Res 1967; 10: 22–49
   Google Scholar
• Searle C.L., Braida L.D., Cuddy D.R., Davis M.F. Binaural pinna disparity: Another auditory localization cue. J Acoust Soc Am 1975; 57: 448–455
   PubMed Web of Science ®Google Scholar
• Siegenthaler B. The non-universal binaural hearing advantage. Rehabiliation Strategies for Sensorineural Hearing Loss, P Yanick. Grune & Stratton, NY 1979
   Google Scholar
• Silman S., Silverman C.A., Emmer M.B., Gelfand S. Effects of prolonged lack of amplification on speech-recognition performance: preliminary findings. J Rehab Res 1993; 3: 326–332
   Google Scholar
• Silman S., Silverman C.A., Emmer M.B., Gelfant S. Adult-onset auditory deprivation. J Am Acad Audiol 1992; 3: 390–396
   PubMedGoogle Scholar
• Silman S., Gelfand S., Silverman C.A. Late-onset auditory deprivation: effects of monaural versus binaural hearing aids. J Acoust Soc Am 1984; 76: 1357–1362
   PubMed Web of Science ®Google Scholar
• Silverman C.A., Emmer M.B. Auditory deprivation and recovery in adults with asymmetric sensorineural hearing impairment. J Am Acad Audiol 1993; 4: 338–346
   PubMedGoogle Scholar
• Silverman C.A., Silman S. Apparent auditory deprivation from monaural amplification and recovery with binaural amplification: 2 case studies. J Am Acad Audiol 1990; 1: 175–180
   PubMedGoogle Scholar
• Stacy J.S. Apparent total control of severe bilateral tinnitus by masking, using hearing aids. Br J of Audiol 1980; 14: 59–60
   PubMedGoogle Scholar
• Stearns W.P., Lawrence D.W. Binaural fitting of hearing aids: when to and when not, how does one decide?. Hear Aid J 1977; 30: 51–53
   Google Scholar
• Stephens D. The International Outcome Inventory for Hearing Aids (IOI-HA) and its relationship to the Client-oriented Scale of Improvement (COSI). Int J Audiol 2002; 41: 42–47
   PubMed Web of Science ®Google Scholar
• Stephens S.D.G., Callaghan D.E., Hogan S., Meredith R., Rayment A., Davis A.C. Acceptability of binaural hearing aids: a cross-over study. J Royal Soc of Med 1991; 84: 267–269
   PubMed Web of Science ®Google Scholar
• Surr R.K., Montgomery A.A., Mueller H.G. Effect of amplification on tinnitus among new hearing aid users. Ear Hear 1985; 6: 71–75
   PubMed Web of Science ®Google Scholar
• Turk, R. 1986. A Clinical comparison between behind-the-ear and in-the-ear hearing aids. Audiol Acoust, 25:78–86, cited in Dillon, 2001. Hearing Aids. Boomerang Press: Turramurra, Australia.
   Google Scholar
• Van Tasell D.J. New DSP instrument designed to maximize binaural benefits. Hear J 1998; 51: 1–4
   Google Scholar
• Walden B., Demorest M., Hepler E. Self-Report approach to assessing benefit derived from amplification. J Speech Hear Res 1984; 27: 49–56
   PubMedGoogle Scholar
• Walden, T.C. & Walden, B.E. 2004. Predicting success with hearing aids in everyday living. J Am Acad Audiol, In Press.
   Google Scholar
• Weinrich, S. 1982. The problem of front-back localization in binaural hearing. Tenth Danavox Symposium, Klarskogard, Denmark. Scand Audiol Suppl, 15:135–146, as cited by Noble, W., Byrne, D., & Ter-Horst, K. 1997. Auditory localization, detection of spatial separateness, and speech hearing in noise by hearing impaired listeners. J Acoust Soc Am, 102:2343–2352.
   Google Scholar
• Westerman S., Topholm J. Comparing BTEs and ITEs for localizing speech. Hear Instr 1985; 36: 20–24
   Google Scholar
• Wightman F., Kistler D. The dominant role of low-frequency interaural time differences in sound localization. J Acoust Soc Am 1992; 91: 1648–1661
   PubMed Web of Science ®Google Scholar
• Wright H.N., Carhart R. The efficiency of binaural listening among the hearing impaired. Archiv of Otolaryng 1960; 72: 789–797
   PubMedGoogle Scholar