International Journal For Multidisciplinary Research

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Comparative Analysis of Click and Level-Specific CE Chirp Stimuli in Auditory Brainstem Response Testing in Children

Author(s) Mr. Mayank Mehra, Mr. Omprakash Preyadarshi, Mr. Sandeep Kumar, Mr. Pawan Kumar
Country India
Abstract Background: Auditory Brainstem Response (ABR) testing is a widely used objective method for evaluating auditory pathway integrity, especially in populations where behavioural audiometry is unreliable. Traditional click stimuli, while broadly used, are limited in synchronizing cochlear responses due to travel time dispersion along the basilar membrane. Level specific CE chirp stimuli were developed to counteract these delays and improve neural synchrony. The present study aimed to establish normative CE chirp ABR data in children aged 6–12 years and compare latency and threshold outcomes with click evoked responses.
Methods: Thirty children with normal hearing (6–12 years) underwent ABR testing with both click and level specific CE chirp stimuli. Latencies of waves I, III, and V were recorded at 75 dBnHL. Standard audiological evaluations (PTA, immittance, DPOAEs) ensured normal peripheral hearing. Statistical comparisons were made using paired t tests (SPSS v20).
Results: CE chirp stimuli yielded significantly shorter latencies for waves III and V compared to click stimuli in both ears, whereas wave I latency differences were not significant. Estimated hearing thresholds were significantly lower with CE chirp stimuli. The differential wave V latency at threshold further suggested improved neural synchrony with CE chirp compared to click stimulation.
Conclusions: Level specific CE chirp stimuli produce more synchronized neural responses, leading to earlier wave III and V latencies and better threshold estimation than click stimuli. Their clinical use is recommended for pediatric ABR protocols to enhance test efficiency and reliability.
Keywords Auditory Brainstem Response ,CE chirp stimuli ,click evoked responses, latencies, pediatric
Published In Volume 7, Issue 6, November-December 2025
Published On 2025-12-14
DOI https://doi.org/10.36948/ijfmr.2025.v07i06.63587
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