About this trial
The goal of this study is to evaluate the sensitivity of a newly-developed prototype device in its ability to measure brain responses to speech sounds in an infant population. The main research questions are: 1) Is the prototype sensitive to brain response differences from infants with hearing loss with and without hearing aids? and 2) How do the measured brain responses from infants with hearing loss compare to infants with normal hearing who are the same age? Participants will have their brain responses measured using the prototype in response to average-level non-sense speech sounds across 1 to 2 sessions in a "no-hearing aids" condition. Participants with hearing loss who are already fit with hearing aids will additionally undergo a "with hearing aids" recording condition.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Infants (3 to 24 months of age) with normal hearing who have passed their audiological diagnostic evaluation
Infants (3 to 24 months of age) identified with hearing loss at their audiological diagnostic evaluation, whose parents have chosen spoken language as their form of communication, and who have been prescribed and fitted with a hearing aid(s).
Disqualifiers
None
Trial design
Single group
Treatments tested in this trial
A newly developed prototype device for speech-evoked EFR Measurement
DeviceSpeech-evoked envelope following responses (EFRs) are measured using the newly developed clinical prototype to objectively assess auditory responses. Surface electrodes are placed on the head, a non-sense speech stimulus is presented at an average level, and EFRs are recorded for 15-30 minutes while patient sleeps or is at rest.
Treatment groups
Trial outcomes
Primary outcomes
Speech-Evoked Envelope Following Responses (EFRs) Agreement with Hearing Assessment
EFR detection rates will be compared to hearing assessment results for the "Infants with normal hearing" and the "Infants with hearing loss" group for the unaided recording condition. Correlation and regression analysis will be used to look at agreement between prototype measures and the child's hearing assessment results.
Secondary outcomes
Speech-evoked Envelope Following Response (EFR) Amplitude in Infants with Hearing Loss
EFR amplitudes will be compared between the aided and unaided conditions of the "Infants with hearing loss" group. Repeated measures ANOVA and post-hoc paired t-tests will be used for data analysis.
Speech-Evoked Envelope Following Responses (EFRs) Amplitude Between Normal Hearing and Hearing Loss Infants
EFR amplitudes will be compared between the "Infants with normal hearing" and the "Infants with hearing loss" groups. EFR amplitude will also be compared between groups by deriving a normal range of measurement (from normal hearing infants) and characterizing whether measures from infants with hearing loss are or are not within that range. This is a descriptive, not inferential, analysis that is mainly used to aid in interpretation of the nature of the response, so inferential statistics are not proposed.
Speech-evoked Envelope Following Response (EFR) detection rates in Infants with Hearing Loss
EFR detection rates will be compared between the aided and unaided conditions of the "Infants with hearing loss" group. Repeated measures ANOVA and post-hoc paired t-tests will be used for data analysis.
Speech-Evoked Envelope Following Responses (EFRs) Detection Rate Between Normal Hearing and Hearing Loss Infants
EFR detection rate will be compared between the "Infants with normal hearing" and the "Infants with hearing loss" groups. EFR detection rate will also be compared between groups by deriving a normal range of measurement (from normal hearing infants) and characterizing whether measures from infants with hearing loss are or are not within that range. This is a descriptive, not inferential, analysis that is mainly used to aid in interpretation of the nature of the response, so inferential statistics are not proposed.
Sponsors and contacts
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Susan Scollie
Lead sponsor
Western University, Canada
Sponsor institution
Dalhousie University
Collaborator
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