National Acoustic Laboratories Library

The Detection of Infant Cortical Auditory Evoked Potentials (CAEPs) Using Statistical and Visual Detection Techniques (Record no. 3215)

MARC details
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Transcribing agency National Acoustics Laboratories
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Title The Detection of Infant Cortical Auditory Evoked Potentials (CAEPs) Using Statistical and Visual Detection Techniques
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Summary, etc Abstract<br/>Background: With the advent of newborn hearing screening programs, the need to verify the fit of hearing<br/>aids in young infants has increased. The recording of cortical auditory evoked potentials (CAEPs) for<br/>this purpose is quite feasible, but rapid developmental changes that affect response morphology and the<br/>presence of electrophysiological noise can make subjective response detection challenging.<br/>Purpose: The purpose of this study was to investigate the effectiveness of an automated statistic versus<br/>experienced examiners in detecting the presence of infant CAEPs when stimuli were present and reporting<br/>the absence of CAEPs when no stimuli were present.<br/>Research Design: A repeated-measures design was used where infant-generated CAEPs were interpreted<br/>by examiners and an automated statistic.<br/>Study Sample: There were nine male and five female infants (mean age, 12 mo; SD, 3.4) who completed<br/>behavioral and electrophysiological testing using speech-based stimuli.<br/>Data Collection and Analysis: In total, 87 infant CAEPs were recorded to three sensation levels, 10, 20<br/>and 30 dB relative to the behavioral thresholds and to nonstimulus trials. Three examiners were presented<br/>with these responses: (1) “in series,” where waveforms were presented in order of decreasing<br/>stimulus presentation levels, and (2) “nonseries,” where waveforms were randomized completely and<br/>presented as independent waveforms. The examiners were given no information about the stimulus levels<br/>and were asked to determine whether responses to auditory stimulation could be observed and their<br/>degree of certainty in making their decision. Data from the CAEP responses were also converted to multiple<br/>dependent variables and analyzed using Hotelling’s T2. Results from both methods of response detection<br/>were analyzed using a repeated measures ANOVA (analysis of variance) and parameters of signal<br/>detection theory known as d-prime (d9) and the area under the receiver operating characteristic (ROC) curve.<br/>Results: Results showed that as the stimulus level increased, the sensitivity index, d9, increased for both<br/>methods of response detection, but neither reached the maximum possible d9 value with a sensation level<br/>of 30 dB. The examiners with the greatest experience and Hotelling’s T2 were equally sensitive in differentiating<br/>the CAEP from noise.<br/>Conclusions: Hotelling’s T2 appears to detect CAEPs from normal hearing infants at a rate equal to that<br/>of an experienced examiner. A clinical instrument that applies Hotelling’s T2 on-line, so that the likelihood<br/>of response detection can be assessed objectively, should be of particular benefit to the novice or less<br/>experienced examiner.
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Cortical auditory evoked potentials
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Infants
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Topical term or geographic name as entry element Normal hearing
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Personal name Carter, Lyndal
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Personal name Golding, Maryanne
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Personal name Syemour, John
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Personal name Dillon, Harvey
9 (RLIN) 123
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Relationship information Vol 21 No 5 (2010)
Title Journal of the American Academy of Audiology
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Uniform Resource Identifier <a href="https://dspace.nal.gov.au/xmlui/bitstream/handle/123456789/967/Carter_JAAA2010_Detection%20of%20infant%20CAEP%20using%20statistical%20and%20visual%20detection%20techniques.pdf?sequence=1&isAllowed=y">https://dspace.nal.gov.au/xmlui/bitstream/handle/123456789/967/Carter_JAAA2010_Detection%20of%20infant%20CAEP%20using%20statistical%20and%20visual%20detection%20techniques.pdf?sequence=1&isAllowed=y</a>
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Source of classification or shelving scheme Universal Decimal Classification
Koha item type Journal article

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