New brain wave test could revolutionize hearing loss diagnosis

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Age 18-77 years (limits included) * Ability to fill out a questionnaire and to perform a speech intelligibility test * Dutch or French as native language • Control group * No self-reported hearing difficulties according to HHIE-s questionnaire (score of ≤4) • Test group * Self-reported hearing difficulties according to HHIE-s questionnaire (score of \>4) • Subgroup DFNA9: * Genetically tested and confirmed to have DFNA9 related hearing loss. Note: This genetic testing was performed through standard of care testing, prior to participation in the study. Exclusion Criteria: * Audiometric hearing loss classifications of Moderate, Moderately severe, Severe, Profound as defined by (Clark, 1981) of the tested ear * Asymmetrical hearing loss Note 1: Asymmetrical hearing loss is defined as an average difference of more than 15dB between both ears across the frequencies of 500, 1000, 2000 and 4000 Hz. The sum of loss in dB is divided by 4 and rounded up. A frequency not perceived is considered a loss of 120 dB. Note 2: This exclusion criterium is not applicable for the DFNA 9 subgroup * Tinnitus with a clinical handicap index (TFI) \> 25. * Patients with type AD, AS, B or C tympanograms * Conductive hearing loss on the tested ear at the discretion of the investigator * Genetic hearing loss of the tested ear Note: This exclusion criterium is not applicable for the DFNA9 subgroup. * Congenital hearing loss of the tested ear Note: This exclusion criterium is not applicable for the DFNA9 subgroup. * Blocked ear canal(s) of the tested ear * Pregnant or breast-feeding * Hearing aid user on the tested ear * Middle ear surgery on the tested ear * Acute ear infection of the tested ear * Acute external auditory canal trauma on the tested ear * Participation in session 2 of previous clinical trial NCT06114680