The auditory brainstem response (ABR) is an evoked potential that is commonly recorded to study auditory function in either normal or pathological conditions. ABRs are recorded far-field from the scalp and are typically composed of five to seven vertex positive waves within the first 10 ms after an auditory stimulus.

Objectives: To establish normative data required for recording Auditory Brainstem Response (ABR) using monaural stimulations in children with normal hearing. Methods: This study was conducted on 40 apparently healthy children.

Jan 12, 2023 · ABR measures the synchronous neural fiber activity along the auditory pathway to determine hearing thresholds. Mechanical sound is transformed into electrical signals in the cochlea and transmitted to the brain through the auditory or …

A bifid wave III, and a very small wave III in the presence of a clear wave V at normal latency, are normal variant BAEP waveform patterns. The IV–V complex is often the most prominent component in the BAEP waveform, and is usually followed by a large negative deflection (VN or the slow negativity) that lasts several milliseconds and brings ...

Nov 20, 2006 · Stimulus rates of 31.1, 45.1 and 61.1/sec were used to evoke ABR waveforms from 20 otologically normal subjects. Wave V latencies were statistically compared between groups; wave V latency shifted predictably with each stimulus rate increase.

Nov 18, 2013 · There are five primary ABR waveform components, waves I through V. We have been able to establish the neural generator sites for these specific wave components. Wave I is generated from the distal portion of cranial nerve VIII where it exits the cochlea.

Feb 7, 2022 · Wave V is the primary focus of threshold ABR testing being the largest peak and thus easiest to detect. The ABR is unaffected by sleep so can theoretically be recorded when the patient is awake or asleep. However, it is a relatively small evoked potential response.

Early AEPs occur at a latency of 0 - 20 ms, the most popular of which is the Auditory Brainstem Response (ABR) test. I like to think of early AEPs as non-voluntary, automatic hearing functions – the ones one cannot switch off. These tests therefore can be done with the adult or child asleep or even under general anaesthesia.

In 1971, Jewett and Williston gave a clear description of the human ABR and correctly interpreted the later waves as arriving from the brainstem. In 1977, Selters and Brackman reported on prolonged inter-peak latencies in tumor cases (greater than 1 cm).

Aug 1, 2023 · ABR can determine the hearing threshold at high frequency by detecting the intensity at which wave V disappears; this contributes to the diagnosis of suspected hearing loss in infants and uncooperative adults, and in subjects presenting with factitious symptoms.