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AbstractObjectiveDesignStudy sampleResultsConclusionAuditory-steady state responses (ASSRs) to stimuli modulated by different frequencies may differ between children and adults. These differences in response characteristics or latency may reflect developmental changes. This study investigates age-related differences in response strength, latencies, and hemispheric laterality indices of ASSRs for different modulation frequencies.Multi-channel EEG was used to measure ASSRs to broadband noise, modulated at either 40 or 80 Hz, presented at 70 dB SPL to the left, right, or both ears.This study involved 18 adults (20-26 years) and 17 children divided into two age groups: younger children (6-10 years) and older children (11-14 years).Advancing age was associated with increased response strength and prolonged latencies for 40-Hz ASSRs, with significant differences observed between adults and younger children. No significant age-related differences were noted for 80-Hz ASSRs. Laterality analysis indicated a right-hemisphere tendency for 40-Hz ASSRs in older children and 80-Hz ASSRs in younger children, respectively.The study indicates the development of 40-Hz ASSRs with increasing response strength and prolonged latencies. The results of children with normal hearing are important for further research on children with hearing impairment. [ABSTRACT FROM AUTHOR]

AbstractObjectiveDesign and study sampleResultsConclusionTo investigate the reliability of a bilingual school-age hearing screening in four school grades based on the Digit Triplet Test (DTT) in two languages and to investigate three calculation methods for referral values in their ability to detect hearing losses and avoid false-positive results.3255 children, aged between 10 and 17 years old, were tested during a systematic hearing screening program in a bilingual, French-German area in Belgium. French speaking children were tested with a French DTT, German children were tested with a German DTT. The SRT-values, their stability and measurement error were investigated per grade and language. The number of false-positive results was studied for three referral methods, using additional audiometric data of 71 children.Our data showed that reliable results with high stability and a small measurement error can be obtained in only around two minutes per ear. Differences between languages are minimal and grade-specific referral values were necessary. A referral method considering the lowest SNRs in the adaptive staircase reduces the number of false-positive results substantially.The DTT versions of different languages can be used reliably in a bilingual school-age hearing screening program when grade-specific, alternative referral methods are implemented. [ABSTRACT FROM AUTHOR]