Overview
- Objective test for threshold hearing and neurodiagnosis.
- Technique: Surface electrodes, sound stimuli (usually clicks), computer-generated waveform through averaging and amplification.
Components
- Generators: EECOLI (E: 8th CN, C: cochlear nucleus, O: superior olivary nucleus, L: lateral lemniscus, I: inferior colliculus)
Clinical Applications of ABR
- Newborn screening.
- Threshold testing for difficult-to-test individuals (e.g., children, malingerers).
- Neuro-diagnosis of VIII nerve/brainstem problems.
- Intra-operative monitoring.
