ABR Wave and Interpeak Latencies
This tool computes differences between identified ABR waves I, III and V recorded under the same conditions. Age and equipment affect reference distributions; no normal/abnormal interpretation is provided.
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9 fields are required.
Calculated intervals
Enter all wave latencies, age and stimulus information to calculate intervals.
- Wave I
- ms
- Wave III
- ms
- Wave V
- ms
- I–III interval
- ms
- III–V interval
- ms
Only arithmetic differences are displayed. No comparison with age-specific or device-specific norms is performed.
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Formula, limitations and sources
Calculation
I–III = III − I; III–V = V − III; I–V = V − I, in milliseconds. Requires 0 < I < III < V. Displays at most six decimal places; positive differences below 0.000001 are indicated as less than 0.000001.
Example (hypothetical; not a reference range)
With I = 1.52 ms, III = 3.63 ms and V = 5.81 ms, I–III = 2.11 ms, III–V = 2.18 ms and I–V = 4.29 ms. Age, stimulus type and level are recorded as context only.
Applicability and review
The wave peaks must be identified in the same recording. dB nHL, dB SPL and dB peSPL are not automatically interchangeable, and age bases are not converted. Original age/device reference tables lack complete verification and rights clearance; none are reproduced. Sources checked: 2026-11-10.