Cortical Auditory Evoked Potentials in 2-Year-Old Subjects

Abstract

Introduction Cortical auditory evoked potentials (CAEPs) can be used to evaluate both peripheral and cortical components of auditory function, and contribute to the assessment of functional sensitivity and auditory thresholds, especially in neonates and infants. Auditory evoked potentials reflect auditory maturity and precede the acquisition of more complex auditory and cognitive skills, and are therefore crucial for speech and language development. Objective The aim of the present study was to determine the presence, latency and amplitude of CAEP components in response to verbal stimuli in children aged 2 years old. Methods The sample consisted of 19 subjects, 10 of whom were male while 9 were female. All of the participants were 24 months old at the time of assessment. Results A total of 17 of the participants displayed all components of the CAEP. Additionally, no significant differences were observed between genders or ears in the present sample. The presence of all components of the CAEP in subjects aged 2 years old confirms the existence of a critical period for the maturation of auditory pathways in the first 2 years of life. Conclusion In the present study, in addition to the P1/N1 components, it was possible to observe the presence of the CAEP P2/N2 components in individuals aged 24 months, confirming the existence of a critical period for the maturation of the auditory pathways in the first 2 years of life.

Cortical Auditory Evoked Potentials in Children with Prenatal Exposure to Zika Virus

“…It is a mixed component that originates in multiple s-generated responses along the brain stem, cortical, and thalamic auditory regions [32,33], which may undergo alterations due to intrinsic factors such as attention and sleep [36]. Maturational aspects, including the individual variation in development intrinsic to each subject, and exposure to sounds in the first years of life, may also explain the absence of this peak [37]. Thus, it seems unlikely that this finding is directly associated with the occurrence of congenital ZIKV infection.…”

Effect of Modulated Masking on Cortical Auditory Evoked Potential in Normal Hearing Individuals: A Systematic Review and Meta-analysis

“…8,9 Investigations on CAEPs make it possible to evaluate the entire auditory system, from the brainstem to the auditory cortex, and CAEPs can be obtained through different types of stimuli. 10 Moreover, studies on the auditory cortical wave complex (P1-N1-P2) provide important information on the neural processes responsible for speech perception, maturation of the auditory system, as well as the quality of auditory information processing. 11 Considering CAEPs an important measure to obtain objective auditory responses, the investigation of its application with modulated masking enables the assessment of analysis parameters of the masking release phenomenon in individuals with normal hearing, providing relevant findings regarding the impact of this phenomenon on temporal processing and related skills.…”