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[Short-latency brain-stem auditory evoked potentials in patients with a brain concussion]
Zhurnal Voprosy Neirokhirurgii Imeni N. N. Burdenko
|April 1, 1995
Summary
Brain concussion can impair auditory nerve function, slowing nerve signal conduction. This study found significant auditory pathway abnormalities in two-thirds of patients with mild traumatic brain injury.
Area of Science:
- Neuroscience
- Audiology
- Traumatology
Background:
- Concussion, a mild traumatic brain injury, can cause diverse neurological symptoms.
- Auditory pathway dysfunction is a potential consequence of head trauma.
Purpose of the Study:
- To investigate short-latent acoustic brainstem evoked potentials in males with concussion.
- To assess the impact of concussion on auditory nerve and brainstem function.
Main Methods:
- Electrophysiological assessment of short-latency auditory evoked potentials.
- Analysis of evoked potentials in 72 males aged 9–61 years within 0.5–15 days post-concussion.
Main Results:
- Two-thirds of patients exhibited reduced signal conduction rates in the auditory brainstem pathway.
- A quarter of patients showed delayed acoustic stimulus perception, indicating auditory nerve and relay nuclei dysfunction.
- Abnormalities in short-latency auditory evoked potentials, including prolonged latencies and wave deformities, were observed in over 90% of patients.
Conclusions:
- Concussion significantly affects the function of the auditory nerve and brainstem pathways.
- Short-latency auditory evoked potentials are sensitive indicators of early post-concussion auditory system impairment.