Рsychoacoustic testing to assess the functional maturation of the central audiotory system
Сенсорные системы(2023)
Abstract
The age-appropriate development of the central auditory system is crucial for a child’s normal auditory and speech development. If there are any issues with this development, it can lead to central auditory processing disorders (APD) and problems with psychoverbal and general development. Psychoacoustic testing is an informative and accessible diagnostic tool for identifying signs of APD. This testing can be performed on children as young as four years old, provided there are normative data available for different age groups. The purpose of this study was to assess the functional state of the central auditory system using psychoacoustic methods in healthy children of different ages. Materials Methods. We examined 125 healthy full-term children between the ages of 4 and 17 years who had normal peripheral hearing and no speech, language, cognitive, or academic problems. The children were divided into five age groups: 4–5 years 11 months, 6–7 years 11 months, 8–9 years 11 months, 10–11 years 11 months, and 12 years and older. In addition to traditional audiological examinations, all children underwent tests to assess the functional state of the central parts of the auditory system, including tests for the perception of rhythmic sequences of stimuli, Random Gap Detection Test, monaural low redundant speech testing in quiet and in noise, alternating binaural speech testing, dichotic digits test, and a simplified version of the Russian matrix sentence test in noise (RUMatrix). The results showed that the tests used were sensitive to the functional state of various structures of the central auditory system, and signs of maturation in the “bottom-up” direction were demonstrated as the children grew older. The rate of evolutionary processes varied depending on the age group of the subjects. It was also shown that the morphofunctional development of the central auditory system is not completed by adolescence. Conclusion. These findings can be used to differentiate between the immaturity of the central auditory system, APD, and speech-language disorders of different types in children of different ages. Overall, this study emphasizes the importance of early detection and intervention for any issues related to the central auditory system in children.
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