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Assessment of Bimodal Contribution in Adult Cochlear Implant Users

2 januari 2015 uppdaterad av: MICHAL.LUNTZ, Bnai Zion Medical Center

Assessment of the Contribution of the Combined Acoustic Hearing Via a Hearing Aid and Electric Hearing Via a Cochlear Implant in Adult Bimodal Users With Moderate to Severe Residual Hearing in the Implanted and Non Implanted Ear.

To evaluate the combination of electric hearing through Cochlear Implant and acoustic hearing through hearing aid in bimodal users with moderate-to-severe hearing loss in the non-implanted ear. The research will also provide pilot study data on unilateral Cochlear Implant recipients with residual useful acoustic hearing in the implanted ear whose acoustic hearing has been preserved.

Studieöversikt

Status

Okänd

Betingelser

Detaljerad beskrivning

Many current unilateral Cochlear Implant users have some residual acoustic hearing in the opposite ear as well as in the implanted ear. The amount of useful residual acoustic hearing varies among these implantees. There are several acoustic and electric combinations in the bilateral-bimodal listening mode depending on the amount of useful residual acoustic hearing in each ear. The combination of low frequency acoustic information provided by the hearing aid on each ear, completes the high frequency electric information provided by the Cochlear Implant (complementary bimodal benefit). Each of the different rehabilitation combinationsfor unilateral Cochlear Implant users enablesa unique integration of the three aspects of bilateral hearing bilaterality, binaurality and bimodality which may provide significant advantages over unilateral Cochlear Implant stimulation in terms of speech perception in noise, complementary information as well as localization abilities.

The study will include 20 bilateral-bimodal users with moderate-to-severe hearing loss at 250 Hz, 500 Hz and 1000 Hz in the non-implanted ear, who use hearing aids for at least 75% of their waking hours. Evaluation utilizes bilateral-binaural and bimodal complementary effects task-specific test batteries based on published doctoral research project. The assessment protocol consisted of tests that include various speech materials, different maskers, presentation of the noise from different locations in space, right/left speech lateralization, pitch-related tasks and subjective questionnaires. All tests will be administered in three listening conditions: Cochlear Implant -alone, hearing aid-alone and Cochlear Implant +hearing aid.

Studietyp

Interventionell

Inskrivning (Förväntat)

20

Fas

  • Inte tillämpbar

Kontakter och platser

Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.

Studieorter

      • Haifa, Israel
        • Rekrytering
        • Bnai Zion Medical Center
        • Huvudutredare:
          • Michal Luntz, MD
        • Kontakt:
        • Underutredare:
          • Noam Yehudai, MD
        • Underutredare:
          • Talma Shpak, PhD

Deltagandekriterier

Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.

Urvalskriterier

Åldrar som är berättigade till studier

18 år och äldre (Vuxen, Äldre vuxen)

Tar emot friska volontärer

Nej

Kön som är behöriga för studier

Allt

Beskrivning

Inclusion Criteria:

  • Bilateral-bimodal users
  • With moderate-to-severe hearing loss at 250 Hz, 500 Hz and 1000 Hz in the non-implanted ear
  • Who use hearing aids for at least 75% of their waking hours

Exclusion Criteria:

-

Studieplan

Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.

Hur är studien utformad?

Designdetaljer

  • Primärt syfte: Behandling
  • Tilldelning: N/A
  • Interventionsmodell: Enskild gruppuppgift
  • Maskning: Ingen (Open Label)

Vapen och interventioner

Deltagargrupp / Arm
Intervention / Behandling
Experimentell: Bimodal users

Bilateral-bimodal users with moderate-to-severe hearing loss who use hearing aids for at least 75% of their waking hours.

Administration of Speech perception tests and self-rating questionnaire

Speech perception test results and self-rating questionnaire scores will be analyzed by means of non-parametric statistical tests. The statistical tests will be chosen in accordance with the number and type of variables in each test. Correlation between audiological variables (aided and unaided hearing thresholds in the non implanted ear, aided speech perception abilities in the HA-alone condition) and the bilateral-bimodal benefit will be examined. Moreover, possible relationship between self-rating questionnaire scores and speech perception test results will be assessed.

Vad mäter studien?

Primära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Speech perception task specific tests using assessment protocol which will include 6 speech perception tests in quiet and noise listening conditions.
Tidsram: 12 months

ests designed to examine the contribution of bilateral-binaural benefits:

  1. Semantically unpredictable sentence recognition presented from the front in the presence of a two-male-talker masker.
  2. Horizontal right/left speech lateralization in quiet
  3. Perception of monosyllabic words (HAB) in competing three-male-talker babble.
  4. Semantically unpredictable sentence recognition in the presence of one competing talker using a reversed speech sentence spoken by only two different talkers with different F0 characteristics.
  5. Perception of intonation.
  6. Evaluation of the difference between the perception of natural prosody speech and the perception of speech with flattened F0 contour
12 months

Sekundära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Assessment of functional performance in daily life using self-repot questionnaires
Tidsram: 12 months
the Speech, Spatial and Quality (SSQ) questionnaire and the Hearing Handicap Questionnaire (HHQ).
12 months
Standard basic speech perception tests
Tidsram: 12 Months
Standard basic speech perception tests which will enable to characterize the basic speech perception abilities of the bilateral-bimodal users by means of a commonly utilized assessment tool: monosyllabic word discrimination on the Hebrew version of the AB Word List (HAB) in quiet; Hebrew version of the CID sentence recognition test in quiet and the Hebrew version of the CID sentence recognition test in the presence of four-talker-babble noise with the SNR fixed at +5dB, speech and noise presented from the front.
12 Months

Samarbetspartners och utredare

Det är här du hittar personer och organisationer som är involverade i denna studie.

Utredare

  • Huvudutredare: Michal Luntz, MD, Bnai Zion Medica Center

Studieavstämningsdatum

Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.

Studera stora datum

Studiestart

1 december 2014

Primärt slutförande (Förväntat)

1 augusti 2015

Avslutad studie (Förväntat)

1 december 2015

Studieregistreringsdatum

Först inskickad

24 december 2014

Först inskickad som uppfyllde QC-kriterierna

2 januari 2015

Första postat (Uppskatta)

5 januari 2015

Uppdateringar av studier

Senaste uppdatering publicerad (Uppskatta)

5 januari 2015

Senaste inskickade uppdateringen som uppfyllde QC-kriterierna

2 januari 2015

Senast verifierad

1 januari 2015

Mer information

Denna information hämtades direkt från webbplatsen clinicaltrials.gov utan några ändringar. Om du har några önskemål om att ändra, ta bort eller uppdatera dina studieuppgifter, vänligen kontakta register@clinicaltrials.gov. Så snart en ändring har implementerats på clinicaltrials.gov, kommer denna att uppdateras automatiskt även på vår webbplats .

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