Cochlear Implant Testing

Auditec customers often tell us they need tools to test cochlear implant users. We sell three recordings specifically designed for cochlear implant users as well as many other tests that could be used with cochlear implant patients. The three tools are 1) Lexical Neighborhood Test/Multi-syllabic Lexical Neighborhood Test (LNT/MLNT), 2) BKB-SIN, and 3) Minimal Auditory Capabilities (MAC). All three of these include recordings and instructions so that customers can test cochlear implant patients with confidence.

Since children with cochlear implants generally perform poorly on the PBK word list, it is not a recommended recording for cochlear implant patients.  Instead, we recommend the Lexical Neighborhood Test/ Multi-syllabic Lexical Neighborhood Test (LNT/MLNT). It was specifically created to assess open-set speech performance in cochlear implant children.

Since cochlear implant users report speech recognition is more difficult in noise, audiologists need a tool to test cochlear implant patients with noise. The BKB-SIN (Speech In Noise) uses sentences in four-talker noise at varying signal-to-noise ratios. This test has also been used to determine cochlear implant candidacy.

If traditional speech materials are too difficult to evaluate hearing ability in an adult cochlear implant patient, we recommend the Minimal Auditory Capabilities (MAC) Battery. It includes gross sound identification, inflection detection, contrast detection, accent discrimination, and word identification with subtests such as question/statement, vowel recognition, spondee recognition, noise/voice, accent, SPIN High-context sentence,  familiar sound recognition, monosyllabic word discrimination, and more.

The LNT/MLNT, BKB-SIN, and MAC Battery are three different tools audiologist can use for cochlear implant patients. However, there are other recording selections in Auditec’s catalog that may be suitable depending for your your needs such as noise recordings, environmental sounds, or auditory training. Auditec gladly provides professionals with the tools they need to help their unique set of patients succeed in life.

LNT/MLNT©

The Lexical Neighborhood/Multisyllabic Lexical Neighborhood Tests (LNT-MLNT)© were developed primarily for use with cochlear implant children.  Determining the benefits of sensory aids (i.e. hearing aids or cochlear implants) is essential for the proper management of hearing impaired children.  Open-set word recognition tests have provided important diagnostic information relative to the benefits of sensory aids.  The information garnered from these tests indicates the extent of neural representation of words in a child’s long-term lexical memory.

The most used open-set word recognition test for children has been the PBK-50 lists.  However, it has been noted that for hearing-impaired children the PBK-50 does not assess the abilities of these children validly.  The LNT-MLNT© has been shown to be a more sensitive measure of spoken word recognition in these children.

The LNT-MLNT© was developed along theoretically motivated current models of spoken word recognition in listeners with hearing impairment.   The development of this test was based on the assumptions of the Neighborhood Activation Model (NAM), which proposes that words are organized into “similarity neighborhoods” based on their frequency of occurrence in the language and the number of phonemically similar words, or neighbors, within the lexical neighborhood.  A dense lexical neighborhood contains many phonemically similar words, whereas a sparse lexical neighborhood has few phonemically similar words.  Words that occur often and come from sparse lexical neighborhoods are easier for children to identify than words with the opposite lexical characteristics.

The stimulus words for this test were selected according to two criteria: 1. The words had to be familiar to young children with limited vocabularies. 2. The selection was based on current models (NAM) of word recognition and lexical access.  Stimuli on this test are separated into easy and hard word lists.

The LNT/MLNT© includes a) audio recording, and b) manual and score forms as printable pdf files. The nineteen-page manual includes administration information and normative data for children. Available from Auditec, Inc. Use the “Buy Now” button below or call 1-800-669-9065 (from US) or 314-416-1050 (outside the US) to order. FREE shipping to the contiguous US. INTERNATIONAL CUSTOMERS: Importers are responsible for duties and taxes. Auditec advises your organization to contact your government to estimate tax prior to ordering.

Lexical Neighborhood Test/Multisyllabic Lexical Neighborhood Test (LNT/MLNT)© (CD Format); Item 205; Price $153.50 USD + S&H* 
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This recording is available in other formats. Email questions regarding copyright or other formats to auditecinfo@auditec.com.

©COPYRIGHT NOTICE: Auditec’s recordings are protected by copyright. Sharing, uploading to servers, publishing to the internet, and all other forms of distribution are prohibited.

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BKB-SIN©

The BKB-SIN© test is a speech in noise test for children. It was developed for children (ages 5 and up), cochlear implant patients, and adults for whom the QuickSIN© test is too difficult. Other uses include: demonstrating the benefits of amplification, predicting performance with hearing aids in loud, noisy environments, assessing directional microphone performance, estimating children’s performance for soft speech, and screening for auditory processing disorders in children.

The BKB-SIN© uses 18 equivalent list pairs for estimating SNR loss. It features Bramford-Kowal-Bench sentences in four talker babble, uses easier sentences than the QuickSIN©, and has norms for children, adults, and cochlear implant users. CD 1 (Standard BKB-SIN) has the target talker and background babble recorded on the same channel of the CD, at pre-recorded signal-to-noise ratios.  CD 2 (Split Track BKB-SIN) has the target talker and background babble recorded on separate channels of the CD.

The BKB-SIN© includes a) audio recording (CD1 and CD2), and b) manual and score forms. The 27-page manual is comprised of administration, interpretation, and development. Normative data for ages 5 and up is included.

Use the “Buy Now” button below or call 1-800-669-9065 (from US) or 314-416-1050 (outside the US) to order. FREE shipping to contiguous US locations. INTERNATIONAL CUSTOMERS: Importers are responsible for duties and taxes. Auditec advises your organization to contact your government to estimate tax prior to ordering.

BKB-SIN© (CD Format); Item No. CD112-9; Price $214.50 USD + S&H
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This recording is only available in CD format from Auditec, Inc.

©Copyright 2005 Etymotic Research, Inc. All Rights Reserved. Distributed with permission. 

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LNT/MLNT opposite Four Talker Noise©

This recording has Lexical Neighborhood Test/Multisyllabic Lexical Neighborhood Test recorded to the left channel with Four Talker Noise recorded to the right channel. This recording is offered for those who want to administer this test with noise; however, no interpretative data is available for the test in noise.

This versatile recording can be administered for masking, speech in noise, or words in quiet. With a dual-channel audiometer, the administrator can set their own signal-to-noise ratio by mixing the left and right channels. They can access the left channel only to administer the word lists in quiet.

The LNT/MLNT opposite Four Talker Noise© includes: a) audio recording, and b) manual and score forms as printable pdf files. The manual pertains to the original test recorded without noise. No normative data for this recording in noise is available. Available from Auditec, Inc.  Use the “Buy Now” button below or call 1-800-669-9065 (from US) or 314-416-1050 (outside the US) to order.  FREE shipping within the contiguous US.

LNT/MLNT opposite Four Talker Noise© (CD Format); Item 240; Price $183.50 USD + S&H*
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©COPYRIGHT NOTICE: Auditec’s recordings are protected by copyright. One backup is permitted. Sharing, uploading to servers, publishing to the internet, and all other forms of distribution are prohibited. Email questions regarding copyright to auditecinfo@auditec.com.

*INTERNATIONAL CUSTOMERS: Importers are responsible for duties and taxes. Auditec advises your organization to contact your government to estimate tax prior to ordering.

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