| 1. |
- Almqvist, Bengt, et al.
(author)
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Handbok i hörselmätning
- 1990
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Book (other academic/artistic)abstract
- Denna bok ger en grundläggande kunskap om hörseln samt förmedlar förutsättningar för olika hörselmätmetoder. Viktiga inslag är felkällor vid hörselmätning, tolkning av mätresultat och lämplig teststrategi i olika tillämpningar. Inläst ur LIC, 1990
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| 2. |
- Almqvist, Bengt, et al.
(author)
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Metodbok i praktisk hörselmätning
- 1983
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Book (other academic/artistic)abstract
- Denna bok är avsedd att användas vid utbildning av audionomer. Den kan dessutom vara en viktig referenskälla för alla övriga yrkesgrupper inom hörselvården. De metodbeskrivningar som presenteras i boken har goda förutsättningar att bidra till förbättrad hörselmätning
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| 3. |
- Andersson, Eva, 1943-, et al.
(author)
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Audiometric screening of a population with intellectual disability
- 2013
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In: International Journal of Audiology. - London : Informa Healthcare. - 1499-2027 .- 1708-8186. ; 52:1, s. 50-56
-
Journal article (peer-reviewed)abstract
- Objective: Evaluation of pure-tone audiometry (PTA) in hearing screening of a population with mild to profound intellectual disability (ID).Design: PTA was performed at six frequencies at the screening level 20 dB HL. Referral criteria were threshold levels ≥ 25 dB HL at two or more frequencies for one ear or both.Study sample: 1478 participants aged 7–91 years were included.Results: 1470 (99.5%) people cooperated in screening of which 1325 (90%) could be tested on both ears at all six frequencies. A majority, 987 (66.8%), performed ordinary PTA, 234 (15.8%) conditioned play audiometry, and 249 (16.9%) behavioural observation audiometry. Six hundred and sixty-nine (45%) passed and 809 (55%) failed according to referral criteria. Of those failing, 441 (54.5%) accepted referral to clinical evaluation.Conclusions: PTA with slight modifications is applicable for screening of a population with mild to profound intellectual disability. The most challenging and time-consuming activity is to introduce the test procedure in a way that reduces anxiety and establishes trust.
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| 4. |
- Andersson, Eva, et al.
(author)
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Evaluation of OAE-recording as a complementary test method for adults with moderate to profound mental retardation
- 2000
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In: Scandinavian Audiology. - : Taylor & Francis. - 0105-0397 .- 1940-2872. ; 29:2, s. 120-126
-
Journal article (peer-reviewed)abstract
- The recording of otoacoustic emissions (OAE) was evaluated as a complementary test method for adults with moderate to profound mental retardation (MR). A portable apparatus, ILO 288 Echoport linked to a Compaq LTE 5100 notebook with software ILO 88 V 4.2, was used. Otoscopy and tympanometry were also performed. Criteria for emissions were S/N 3 dB or more and reproducibility 60% or more for at least three frequency-bands. The criteria for partial emissions were the same, but for only one or two frequencies. Two examiners were needed: one to keep the tested person calm and quiet and the other to handle the keyboard. Thirty-eight people with different degrees of MR in connection with other disabilities were included. They had all exhibited incomplete results in a previous hearing screening of more than 1000 adults with MR. Reproducible transiently evoked OAEs (TEOAE) were recorded from II ears (7 people), partial TEOAEs from 6 ears (4 people) and no emissions from 15 ears (10 people). Registration from 24 ears (13 people) could not be evaluated because of too much external and internal noise. Eight people rejected the examination. Only four people showed emissions in both ears. Accordingly, 34 people (89.5%) had to be re-tested or referred for further investigation, 21 of them (55%) because of noisy recordings or no co-operation. It is concluded that the TEOAE-test in its present form cannot fulfil the demands for a functioning test method for this population. In single cases, however, TEOAE-recording can complement other audiological tests.
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| 5. |
- Andersson, Sara, et al.
(author)
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Rehabilitering
- 2007
-
In: Nordisk lärobok i audiologi. - Bromma : C. A. Tegnér AB. - 9789163194405 ; , s. 325-389
-
Book chapter (other academic/artistic)abstract
- Sjukdomstillstånd och skador i organ och vävnader orsakar diverse funktionella avvikelser, som i sin tur ger upphov till symptom, som personen ifråga kan iaktta och lida av. Dessa orsakar funktionsnedsättningar, som påverkar individens möjligheter att fungera och klara sig i sin dagliga miljö hemma, i olika arbetssituationer och i olika sociala sammanhang.
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| 6. |
- Arlinger, Stig, 1939-
(author)
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A survey of public health policy on bilateral fittings and comparison with market trends : The evidence-base required to frame policy
- 2006
-
In: International Journal of Audiology. - : Informa UK Limited. - 1499-2027 .- 1708-8186. ; 45:SUPPL. 1
-
Journal article (peer-reviewed)abstract
- This report presents a review of the situation in a number of countries with respect to public health policy for funding of hearing aid services in general and support to bilateral fittings in particular. The data show considerable variations among the countries studied in number of hearing aids fitted per 1000 inhabitants, differing by a factor of 6 between the extremes. Also the percentage of bilateral fittings differs with an average estimated to be of the order of 50%. For hearing-impaired children, bilateral fittings are given full financial support in most countries studied. The data presented indicate the need for a reliable, scientifically valid evidence-base regarding bilateral hearing aid fitting. © 2006 British Society of Audiology, International Society of Audiology, and Nordic Audiological Society.
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| 7. |
- Arlinger, Stig, 1939-
(author)
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Audiologic diagnosis of infants
- 2000
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In: Seminars in Hearing. - 0734-0451 .- 1098-8955. ; 21, s. 379-387
-
Journal article (peer-reviewed)
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| 8. |
- Arlinger, Stig, 1939-
(author)
-
Can we establish internationally equivalent outcome measures in audiological rehabilitation?
- 2000
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In: Ear and Hearing. - 0196-0202 .- 1538-4667. ; 21:4 SUPPL.
-
Journal article (peer-reviewed)abstract
- Objective: This paper intends to discuss issues related to cultural, ethnic, and other nonaudiological variables that may affect the response when trying to determine outcome of audiological rehabilitation in different countries. Design: The ideal measure for the determination of outcome of audiological rehabilitation would be sensitive to changes in disability as well as handicap. Further, it would allow unforeseen effects to be identified and not be limited by language borders or cultural and ethnic differences. A variety of critical factors are discussed that are related to culture, social traditions, ethnic factors, etc. that may affect outcome measures and thus make international equivalence difficult. Conclusions: With careful consideration of the factors discussed, a basic set of questions could be formulated and agreed on, calibrated on suitable populations in different countries, and thereafter used as a bridge across borders to allow comparison of different procedures or meta-analyses of studies performed by different laboratories.
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| 9. |
- Arlinger, Stig, 1939-, et al.
(author)
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Clinical trial of a digital hearing aid
- 1998
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In: Scandinavian Audiology. - : Taylor & Francis. - 0105-0397 .- 1940-2872. ; 27:1, s. 51-61
-
Journal article (peer-reviewed)abstract
- A clinical trial of Oticon DigiFocus hearing aid was performed. The test aid was evaluated on 33 subjects with several years' experience as users of modern analog hearing aids. These aids were used as reference for the 1-month-long trial. The Abbreviated Profile of Hearing Aid Benefit (APHAB) showed a mean difference in benefit with superior ratings for the test aid concerning ease of communication, speech in reverberation and speech in background noise. The subjects' own aids were rated somewhat better concerning aversiveness of sounds, but this difference was not statistically significant. The Gothenburg Profile showed a statistically significant difference between the test aid and the reference aids in favour of the test aid. The difference was not most evident with regard to speech communication and the effects of hearing loss on social interactions. Sound quality ratings concerning clearness were significantly higher for the test aid. Speech recognition thresholds in noise were on average 0.7 dB better for the test aids when tested at speech levels 60 and 75 dB. The difference was statistically significant only at 75 dB. There was significant interaction between general preference and hearing aid type, indicating that overall sound quality was an important factor affecting the general preference for either the test aid or the reference aid. Twenty-three subjects generally preferred the test aid, six preferred their own aid and four stated no difference.
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| 10. |
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| 11. |
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| 12. |
- Arlinger, Stig, 1939-, et al.
(author)
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Fitting hearing aids to first-time users
- 2000
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In: Scandinavian Audiology. - 0105-0397 .- 1940-2872. ; 29:3, s. 150-158
-
Journal article (peer-reviewed)abstract
- Clinical experience indicates that first-time hearing aid users prefer less gain and lower maximum output levels than experienced users. This hypothesis was tested on 20 subjects being fitted with their first aids. The study was double blinded by using a programmable hearing aid, set to either the standard setting according to the manufacturer's software or to reduced gain and maximum output. Half of the subjects started with one hearing aid and half with the other, changing to the other hearing aid after 3 days trial with each setting. At the end of the study, subjects stated preference in specified situations and overall. No significant differences in APHAB, sound quality, estimated communication ability or perceived loudness scores were seen for the two settings. Nine subjects preferred the standard setting, seven the reduced setting and four were undecided. No correlation could be found between preference and audiological variables.
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| 13. |
- Arlinger, Stig, 1939-
(author)
-
Höga ljudnivåer från musik och dess effekter på vuxna och barn : Rapport till Socialstyrelsen
- 2011
-
Reports (other academic/artistic)abstract
- Syftet med denna översyn är att presentera ett förslag avseende om SOSFS 2005:7 behöver revideras eller ej, baserat på existerande vetenskapligt underlag om effekter på vuxna och barn från exponering för höga ljudnivåer från musik. De nuvarande riktvärdena har vid olika tillfällen ifrågasatts. Från arrangörer av musikfestivaler har hävdats att gränsvärdena är för låga och att det saknas vetenskapligt stöd för dem. Från organisationer med hörselhälsa i fokus har man tvärtom menat att de borde sänkas eftersom för många enskilda fall har rapporterats, där hörselskada i form av hörselnedsättning och/eller tinnitus kunnat kopplas till en specifik exponering i samband med konsert eller diskoteksbesök.Syftet med denna översyn är att presentera ett förslag avseende om SOSFS 2005:7 behöver revideras eller ej, baserat på existerande vetenskapligt underlag om effekter på vuxna och barn från exponering för höga ljudnivåer från musik. De nuvarande riktvärdena har vid olika tillfällen ifrågasatts. Från arrangörer av musikfestivaler har hävdats att gränsvärdena är för låga och att det saknas vetenskapligt stöd för dem. Från organisationer med hörselhälsa i fokus har man tvärtom menat att de borde sänkas eftersom för många enskilda fall har rapporterats, där hörselskada i form av hörselnedsättning och/eller tinnitus kunnat kopplas till en specifik exponering i samband med konsert eller diskoteksbesök.Arbetet som redovisas i denna rapport har baserats på sökning i den vetenskapliga litteraturen via framför allt databasen PubMed, granskning av referenslistor i relevanta rapporter, andra sökningar på Internet samt kontakter med internationella kollegor med insikter i aktuella regelverk. Söktermer har varit music, rock, jazz, discotheque, night-club, concert, hearing, hearing impairment,hearing loss, tinnitus, children i olika kombinationer. Rapporter som fokuserat helt på yrkesmusiker har som regel exkluderats, eftersom exponeringsförhållandena för musiker typiskt skiljer sig från publikens vid konserter, musikfestivaler etc.Randomiserade kontrollerade studier saknas med några få undantag för den aktuella frågeställningen, utan merparten är observationsstudier med eller utan kontrollgrupp. Värdet av kontrollgrupp i studier av temporär hörselnedsättning, TTS, efter musikexponering som pågått upp till några timmar är sannolikt begränsat, eftersom sannolikheten att hörtrösklarna för en oexponerad kontrollgrupp skulle förändras under denna begränsade tidsrymd är försumbar. Grundprinciperna för bedömning av kvaliteten i redovisade studier är i huvudsak hämtade från de principer som tillämpas av Statens beredning för medicinsk utvärdering, SBU. Enskilda studiers bevisvärde graderas som högt (1), måttligt (2) eller lågt (3). Följande principer har använts:Högt bevisvärde (1): Studier med fall-kontroll-grupper med n>50, med lämplig studieuppläggning och relevant statistisk analys.Måttligt bevisvärde (2): Som ovan men med mindre studiestorlek (n=10-50) eller observationsstudier utan kontrollgrupp med n=10-50 med lämplig studieuppläggning och relevant statistisk analys.Lågt bevisvärde (3): Studier som inte uppfyller kriterierna ovan. Studier med mera osäker relevans, t.ex. djurstudier.Rapporten har granskats av professor Ulf Rosenhall, Karolinska institutet, professor Claes Möller, Örebro universitet, docent Björn Hagerman, Karolinska institutet, och med.dr. och leg. audionom Kim Kähäri, Göteborgs universitet. Synpunkter och förslag framförda av dem har inlemmats i skrivningen.
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| 14. |
- Arlinger, Stig, 1939-
(author)
-
Hörsel och hörselskador i arbetslivet : Kunskapssammanställning
- 2013
-
Reports (peer-reviewed)abstract
- Rapporten baserar sig på sammanställning av publicerade artiklar i vetenskapliga tidskrifter med tyngdpunkt på perioden från år 2000. Vissa äldre publikationer har också inkluderats när de har haft innehåll av betydelse för rapporten. Sökning har främst skett i databaserna PubMed och Google Scholar samt i referenslistor från identifierade relevanta arbeten. Söktermer har varit noise, hearing, noise-induced hearing loss, TTS, PTS, tinnitus, impulse noise, solvent, vibration i olika kombinationer.Fokus avseende hörselskador har traditionellt varit inriktat på hörselnedsättning, den försämrade känslighet som ofta men inte alltid är den uppenbara konsekvensen av en skada på hörselorganet. Men senare års forskning har visat att skador kan uppstå utan påtaglig påverkan på hörtrösklarna men i form av tinnitus, överkänslighet för starka ljud, förvrängd ljudupplevelse av olika slag, försämrad förmåga att uppfatta tal i svåra lyssningsmiljöer etc. Det har därför varit angeläget att lyfta fram dessa vidare aspekter på hörselskada.Många arbetsmiljöer domineras av en relativt kontinuerlig ljudnivå, men ibland förekommer också impulsbuller, d.v.s. ljudtoppar med kortvariga mycket höga ljudnivåer. Nya metoder som föreslagits för att mäta och säkrare värdera hörselskaderiskerna vid exponering för impulsbuller beskrivs också i rapporten.Följderna av bullerexponering på en individs hörsel beror inte alltid enbart på bullerexponeringen utan kan påverkas av andra faktorer. Dessa kan vara relaterade till arbetsmiljön men också till egenskaper hos den exponerade individen och kan därför behöva beaktas i skaderiskbedömningar.Djurförsök ha påvisat möjligheten att med farmakologiska medel minimera bullerskada efter en exponering och också att åtminstone delvis återskapa hörselfunktionen efter en bullerskada. Strävan är naturligtvis att kunna överföra denna kunskap och metodik till människa, men ännu återstår mycket arbete innan sådan behandling är tillgänglig.
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| 15. |
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| 16. |
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| 17. |
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| 18. |
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| 19. |
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| 20. |
- Arlinger, Stig, 1939-
(author)
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Measurement of hearing thresholds
- 2007. - 1
-
In: Noise and its effects. - London : John Wiley & Sons. ; , s. 148-164
-
Book chapter (other academic/artistic)abstract
- Noise is an increasing problem in everyday life, and many noise-induced hearing problems are irreversible. This book focuses on all aspects of noise-related problems, including noise effects on stress levels, functional changes after noise-induced cochlear damage, occupational hearing loss and noise conservation problems.
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| 21. |
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| 22. |
- Arlinger, Stig, 1939-
(author)
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Negative consequences of uncorrected hearing loss - A review
- 2003
-
In: International Journal of Audiology. - 1499-2027 .- 1708-8186. ; 42:SUPPL. 2
-
Journal article (peer-reviewed)abstract
- Hearing loss gives rise to a number of disabilities. Problems in recognizing speech, especially in difficult environments, give rise to the largest number of complaints. Other kinds of disabilities may concern the reduced ability to detect, identify and localize sounds quickly and reliably. Such sounds may be warning or alarm signals, as well as music and birds singing. The communicative disability affects both hearing-impaired people and other people in their environment-family members, fellow workers, etc. Hearing-impaired people are not always aware of all the consequences of the impairment, they do not always know what they are missing. Several studies have shown that uncorrected hearing loss gives rise to poorer quality of life, related to isolation, reduced social activity, and a feeling of being excluded, leading to an increased prevalence of symptoms of depression. These findings indicate the importance of early identification of hearing loss and offers of rehabilitative support, where the fitting of hearing aids is usually an important component. Several studies also point to a significant correlation between hearing loss and loss of cognitive functions. Most of these studies show such a correlation without being able to show whether the hearing loss caused the reduction in cognitive performance or if both the hearing loss and the cognitive decline are parts of a common, general age-related degeneration. A couple of these studies, however, indicate that the uncorrected hearing loss may be the cause of cognitive decline. Whichever alternative is true, the correlation should be seen as a clear indication for early hearing aid fitting for those needing it. Monaural hearing aid fitting in subjects with bilateral hearing loss may give rise to a reduced ability to recognize speech presented to the unaided ear, the so-called late-onset auditory deprivation effect. This functional decline is reversible in some but not all subjects after fitting of a hearing aid also on the previously unaided ear.
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| 23. |
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| 24. |
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| 25. |
- Arlinger, Stig, 1939-
(author)
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Psychoacoustic audiometry
- 2008. - 7
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In: Scott-Brown's otorhinolaryngology, head and neck surgery. - London : Hodder Arnold. - 9780340808931 - 0340808934 ; , s. 3260-3275
-
Book chapter (other academic/artistic)abstract
- Scott-Brown's Otolaryngology is used the world over as the definitive reference for trainee ENT surgeons, audiologists and trainee head and neck surgeons, as well as specialists who need detailed, reliable and authoritative information on all aspects of ear, nose and throat disease and treatment. This new edition has been fully updated by an international team of editors and contributors and is highly illustrated in colour throughout. The majority of the chapters are evidence-based and each contains useful features including key points, best clinical practice guidelines, details of the search strategies used to prepare the material, and suggestions for future research. These features provide quick access to relevant information about clinical conditions, and a starting point for further research. The stand-alone CD-ROM contains the same content as the print edition, is searchable, and has references linked to PubMed. It provides trainee surgeons (ENT and Head and Neck), audiologists and ENT physicians with a more portable version of this extensive reference work, and access to downloadable figures, bookmarking and annotation tools.System requirements: The following are minimum requirements for running the CD-ROM. However, we recommend that you run the CD-ROM on a machine with a 1Gz processor with 500 MB RAM, 1024 by 768 screen resolution, using Firefox as your web browser. The recommended specifications will ensure the CD-ROM runs at optimal speed and performance. PC: Intel(R) Pentium(R) III, 266 MHz processor (or 1 GHz for Vista), Windows(R) 2000, XP, Vista*, Browser: Firefox 2.0; Internet Explorer 6.2 SP1, or 7.0; Netscape 9**, 28 MB RAM (or 1 GB for Vista), 80 MB free hard-disk space, 24x CD-ROM or DVD drive, 800 x 600 screen resolution displaying 32-bit colour, Windows(TM) compatible mouse, Printer (optional), Internet connection (optional)***. Please note that it is not compatible with Windows 7. Mac(R): G3 or newer, 266 MHz processor, Mac(R) OS X 10.4 (OS X 10.5 is not supported)*, Browser: Firefox 2.0; Netscape 9; Safari 3.0**, 256 MB RAM, 80 MB free hard-disk space, 800 x 600 screen resolution displaying 32-bit colour, CD-ROM or DVD drive, Mouse, Printer (optional), Internet connection (optional)***. * Your keyboard should be set to English characters when you use the CD-ROM.** Your browser should be set to allow cookies and pop-ups and you will need to have JavaScript enabled. *** Although you do not need to have an internet connection to use the application, you must make sure that your browser is not set to work offline. You can deselect this option from the File menu in Internet Explorer, Netscape, and Firefox (this option is not available in Safari).
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| 26. |
- Arlinger, Stig, 1939-, et al.
(author)
-
The design of a project to assess bilateral versus unilateral hearing aid fitting
- 2008
-
In: Trends in Amplification. - : Sage Publications. - 1084-7138. ; 12:2, s. 137-144
-
Journal article (peer-reviewed)abstract
- Binaural hearing provides advantages over monaural in several ways, particularly in difficult listening situations. For a person with bilateral hearing loss, the bilateral fitting of hearing aids thus seems like a natural choice. However, surprisingly few studies have been reported in which the additional benefit of bilateral versus unilateral hearing aid use has been investigated based on real-life experiences. Therefore, a project has been designed to address this issue and to find tools to identify people for whom the drawbacks would outweigh the advantages of bilateral fitting. A project following this design is likely to provide reliable evidence concerning differences in benefit between unilateral and bilateral fitting of hearing aids by evaluating correlations between entrance data and outcome measures and final preferences. © 2008 Sage Publications.
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| 27. |
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| 28. |
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| 29. |
- Hellgren, Johan, 1966-, et al.
(author)
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Variations in the feedback of hearing aids.
- 1999
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In: Journal of the Acoustical Society of America. - 0001-4966 .- 1520-8524. ; 106, s. 2821-2833
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Journal article (peer-reviewed)
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| 30. |
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| 31. |
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| 32. |
- Hydén, Dag, 1945-, et al.
(author)
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On the sneeze-reflex and its control
- 2007
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In: Rhinology. - 0300-0729 .- 1996-8604. ; 45:3, s. 218-219
-
Journal article (peer-reviewed)abstract
- Experiments in cats have shown that sneezing can be induced using low intensity electrical current. This study focusses on answering the question whether the sneezing-reflex can also be induced in man through electrical stimulation, whether it is reproducible, and if the response can be abolished pharmacologically? Three healthy males were tested using intranasal stimulation in different parts of the nose using a current from an electric pulse generator. Using currents in the range 2-11 mA, it was possible to induce and reproduce sneezing in the anterior portion of the nose corresponding to the distribution area of the anterior ethmoidal nerve. In one tested subject, local anaesthetics applied to the mucous membranes of the nose abolished the sneezing. Sneeze reflex-reduction may be one way to reduce viral contamination between subjects. Further research could include pharmacological investigations to identify a sneeze-inhibiting substance with small risks for side effects that can be added to common cold nasal sprays.
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| 33. |
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| 34. |
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| 35. |
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| 36. |
- Hällgren, Mathias, 1972-, et al.
(author)
-
A Swedish version of the Hearing In Noise Test (HINT) for measurement of speech recognition
- 2006
-
In: International Journal of Audiology. - : Informa UK Limited. - 1499-2027 .- 1708-8186. ; 45:4, s. 227-237
-
Journal article (peer-reviewed)abstract
- A Swedish Hearing In Noise Test (HINT), consisting of everyday sentences to be used in an adaptive procedure to estimate the speech recognition thresholds in noise and quiet, has been developed. The material consists of 250 sentences, with a length of five to nine syllables, normalized for naturalness, difficulty and reliability. The sentences were recorded with a female speaker. From the sentences, 25 phonemically balanced lists were created. All lists fluctuate less than 1 dB of the overall mean. The standard deviation of the test-retest difference is 0.94 dB when testing with one list, and decreases to 0.68 dB and 0.56 dB for two and three lists, respectively. The average speech recognition thresholds in noise for the Swedish sentences were -3.0 dB signal/noise ratio (SD = 1.1 dB). The present study has resulted in a well-defined and internationally comparable set of sentences, which can be used in Swedish audiological rehabilitation and research to measure speech recognition in noise and quiet. © 2006 British Society of Audiology, International Society of Audiology, and Nordic Audiological Society.
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| 37. |
- Hällgren, Mathias, 1972-, et al.
(author)
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Dichotic speech tests
- 1999
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In: Scandinavian Audiology. - 0105-0397 .- 1940-2872. ; 27:Suppl. 49, s. 35-39
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Journal article (peer-reviewed)
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| 38. |
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| 39. |
- Hällgren, Mathias, 1972-, et al.
(author)
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Speech Processing in the Elderly
- 2004
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In: 1st International Congress on Geriatric/Gerontologic Audiology,2004. ; , s. 73-73
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Conference paper (peer-reviewed)abstract
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| 40. |
- Hällgren, Mathias, 1972-, et al.
(author)
-
Speech understanding in quiet and noise, with and without hearing aids
- 2005
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In: International Journal of Audiology. - : Informa UK Limited. - 1499-2027 .- 1708-8186. ; 44:10, s. 574-583
-
Journal article (peer-reviewed)abstract
- Speech recognition and cognitive functions important for speech understanding were evaluated by objective measures and by scores of perceived effort, with and without hearing aids. The tests were performed in silence, and with background conditions of speech spectrum random noise and ordinary speech. One young and one elderly group of twelve hearing-impaired subjects each participated. Hearing aid use improved speech recognition in silence (7 dB) and in the condition with speech as background (2.5 dB S/N), but did not change the perceived effort scores. In the cognitive tests no hearing aid benefit was seen in objective measures, while there was an effect of hearing aid use in scores of perceived effort, subjects reported less effort. There were no age effects on hearing aid benefit. In conclusion, hearing aid use may result in reduced effort in listening tasks that is not associated with improvement in objective scores. © 2005 British Society of Audiology, International Society of Audiology, and Nordic Audiological Society.
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| 41. |
- Johansson, Magnus, 1973-, et al.
(author)
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Binaural masking level difference for speech signals in noise
- 2002
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In: International Journal of Audiology. - 1499-2027 .- 1708-8186. ; 41:5, s. 279-284
-
Journal article (peer-reviewed)abstract
- This study investigates the binaural masking level difference in both detection and recognition of speech embedded in noise when the signal is phasc-shifted 180░ between the left and the right ear. Swedish spondaic words masked by noise were presented binaurally to 10 normally hearing subjects. The results are presented in terms of speech detection threshold, speech recognition threshold, a psychometric function of speech recognition versus signal-to-noise ratio, and speech intelligibility as a function of binaural intelligibility level difference. Both specch detection threshold and speech intelligibility improved when the speech signal was phase-shifted 180░. The binaural intelligibility level difference ranged from 5.7 to 7.7 dB.
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| 42. |
- Johansson, Magnus, 1973-, et al.
(author)
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Reference data for evaluation of occupationally noise-induced hearing loss
- 2004
-
In: Noise & Health. - 1463-1741 .- 1998-4030. ; 6:24, s. 35-41
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Journal article (peer-reviewed)abstract
- Relevant reference data are required in order to determine the effect from occupational noise exposure on hearing. Pure-tone averages (PTA) of hearing threshold levels simplify the evaluation for audiometric frequencies typically affected by noise. The present study provides reference data of high frequency (HF) PTA over 3, 4 and 6 kHz for a general adult population, aged from 20 to 79 years, not exposed to hazardous occupational noise. The results are presented as statistical distributions of HF PTA values as functions of age, and as prevalence of different degree of HF PTA in the age groups 20-29, 30-39, 40-49, 50-59, 60-69 and 70-79 years.
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| 43. |
- Larsby, Birgitta, 1950-, et al.
(author)
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A system for recording of auditory evoked responses
- 2000
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In: Technology and Health Care. - 0928-7329 .- 1878-7401. ; 8, s. 315-326
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Journal article (peer-reviewed)abstract
- A system for recording of evoked potentials from auditory stimulation was developed. The system consists of a PC equipped with an audio bandwidth board with analog input and output channels. The sound stimulus signal is generated in the computer, D/A converted, and via audio amplifier fed to earphones on the test subject. Auditory evoked potentials in response to sound stimuli are recorded via electrodes, amplified and filtered in an EEG recording system and fed to an A/D converter. The signal is analysed in the PC. The modular design of the program makes it a flexible system where stimulus and recording parameters can easily be modified and new applications can be added to standard clinical measurements.Three applications that are not possible with commercially available systems were developed and evaluated. a) A diagnostic procedure to verify hydrops in patients with Meniere's disease. b) Intraoperative recordings of auditory evoked potentials during neurootological surgery. c) Recording of mismatch negativity (MMN) potentials in evaluation of central auditory functions.
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