Maturation of Auditory Processing in Non-habilitated Adolescents and Adults With Prelingual Hearing Impairment Using Event-related Potentials

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The effect of long deprivation on Cortical Auditory Evoked Potentials (CAEPs), especially in human models is not well explored. Hence, the current study aimed to investigate the effects of long-term auditory deprivation on CAEPs in non-habilitated congenitally deaf adolescents and adults and the role of visual stimulation in the auditory cortex, especially on the maturation of CAEPs. Hearing is the process of sensing the surrounding acoustic signal into meaningful acoustic units using the auditory system. It plays a major role in human communication for conveying and perceiving oral messages, emotions, ideas, music, and warning signals. In order to convert the upcoming acoustic signals into a meaningful linguistic unit, an individual should have essentially normal hearing and ample acoustic experience. This ability certainly leads to morphological and functional changes in central auditory processing and is referred to as auditory maturation. These changes start from the gestational period and continue till late adolescence. Many researchers have reported these changes in the auditory system using various imaging and electrophysiological methods However, the most common and clinically used technique to trace the auditory maturation is an electrophysiological method known as Auditory Evoked Potentials (AEPs).