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Optogenetic Stimulation of the Auditory Nerve
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High-stimulation-rate ABR predicts persistent auditory pathway dysfunction in neonates with severe
Yuanquan Li1, Qingchun Pan1, Xingya Li1
1Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, China.
Frontiers in Neurology
|January 28, 2026
Summary
High-stimulation-rate auditory brainstem response (ABR) effectively identifies auditory issues in newborns with hyperbilirubinemia (NH). Severe NH cases show lasting problems, while mild cases have temporary changes, highlighting ABR
Area of Science:
- Neonatal audiology
- Neurophysiology
- Pediatric neurology
Background:
- Hyperbilirubinemia (NH) is common in newborns and can potentially affect auditory pathways.
- Auditory Brainstem Response (ABR) is a key diagnostic tool for assessing hearing and neurological function in infants.
- High-stimulation-rate ABR may offer enhanced sensitivity for detecting subtle auditory processing differences.
Purpose of the Study:
- To analyze high-stimulation-rate Auditory Brainstem Response (ABR) outcomes in neonates with hyperbilirubinemia (NH).
- To assess the clinical relevance of these ABR findings in differentiating severity and tracking auditory changes over time.
- To evaluate the utility of high-stimulation-rate ABR in identifying neonates at risk for auditory deficits.
Main Methods:
- Prospective longitudinal cohort study involving 84 neonates (28 severe NH, 28 mild-to-moderate NH, 28 controls).
- Auditory Brainstem Response (ABR) tests conducted at high (51.1/s) and low (11.1/s) stimulation rates during hospitalization.
- Serum total bilirubin (TSB) measurements and follow-up ABR tests at 3 and 6 months for NH groups.
Main Results:
- Neonates with severe NH exhibited significantly longer interpeak latency differences (ΔIPL I-V) at high stimulation rates compared to mild-to-moderate NH and control groups.
- A positive correlation between serum total bilirubin (TSB) and ΔIPL I-V was observed in the severe NH group during hospitalization.
- Auditory abnormalities, indicated by prolonged ΔIPL I-V, were persistent in the severe NH group at 3 and 6 months, while the mild-to-moderate group showed transient or no significant changes.
Conclusions:
- High-stimulation-rate ABR is a valuable tool for detecting auditory deficits in neonates with NH.
- Severe NH is associated with persistent auditory abnormalities, whereas mild-to-moderate NH may result in transient alterations.
- Routine high-stimulation-rate ABR follow-up is recommended for neonates with severe NH to monitor auditory function.
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