ArticleAudiology & neuro-otology2024
Early Loss of Spiral Ganglion Neurons in the Auditory System after Noise Trauma.
Article in Audiology & neuro-otology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- PFAS exposure induces hearing loss by targeting cochlear hair cells and spiral ganglion neurons.Scientific reports · 2026Article
- Predictors of Rehabilitation Outcomes Following Pediatric Cochlear Implantation.Journal of clinical medicine · 2026Review
- Calpain2-mediated downregulation of apoptosis-inducing factors impairs mitochondrial function in noise-induced spiral ganglion neuron degeneration.IBRO neuroscience reports · 2025Article
- Peri-Traumatic Near-Infrared Light Treatment Attenuates the Severity of Noise-Induced Hearing Loss by Rescuing (Type I) Spiral Ganglion Neurons in Mice.Brain sciences · 2025Article
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Authors and funding
6 authors.
Funding
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Abstract
introductionNoise-induced hearing loss is one of the most frequent recognized occupational diseases. The time course of the involved pathologies is still under investigation. Several studies have demonstrated an acute damage of the sensory tissue, but only few experiments investigated the degeneration of (type I) spiral ganglion neurons (SGNs), representing the primary neurons in the auditory system. The aim of the present study was to investigate the time course of SGN degeneration within a 7-day period after traumatic noise exposure starting immediately after trauma.
methodsYoung adult normal hearing mice were noise exposed for 3 h with a broadband noise (5-20 kHz) at 115 dB SPL. Auditory threshold shift was measured by auditory brainstem recordings, and SGN densities were analyzed at different time points during the first week after acoustic trauma.
resultsSignificant reduction of SGN densities was detected and is accompanied by a significant hearing loss. Degeneration starts within hours after the applied trauma, further progressing within days post-exposure. DISCUSSION: Early neurodegeneration in the auditory periphery seems to be induced by direct overstimulation of the auditory nerve fibers. SGN loss is supposed to be a result of inflammatory responses and neural deprivation, leading to permanent hearing loss and auditory processing deficits.
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