ABR Interpeak Latency Calculator

Actual independently identified chronological ABRwaveI/III/Vcomponent interpeak latencies. Component identification and same stimulus/acquisition essential; not automatically find peaks or diagnose conduction pathology.

Description

ABR interpeak latencies compare independently identified waves I, III and V.

ABR interpeak latencies compare independently identified waves I, III and V.^[1]

Chronological peak coordinates must refer to the same qualified recording.

When to use ABR Interpeak Latency Calculator

Use this tool to calculate or review the supplied observations under the stated rules. Establish the assessment or recording protocol, units, instrument version and independently applicable reference or calibration.

How to use ABR Interpeak Latency Calculator and understand its results

Establish the assessment or recording protocol, units, instrument version and independently applicable reference or calibration.
Enter independentlyIdentifiedWaveOneMs, independentlyIdentifiedWaveThreeMs, independentlyIdentifiedWaveFiveMs, using the field meanings and rules below, then run the tool.
Read result.observedOneToThreeMs, result.observedThreeToFiveMs, result.observedOneToFiveMs. Use the units and sign conventions below.
Correct any reported input issue and run again. Before using a successful result, check the stated units, signs, reference scope and observation coverage.

Input field	Meaning	Value type	Requirement
independentlyIdentifiedWaveOneMs	Independently identified wave one ms	number	Required
independentlyIdentifiedWaveThreeMs	Independently identified wave three ms	number	Required
independentlyIdentifiedWaveFiveMs	Independently identified wave five ms	number	Required

Require wave I≥0, wave III≥wave I and wave V≥wave III in milliseconds. Equal peak times are allowed. Return III−I, V−III and V−I without recognizing the waveform or choosing normative limits.

I_III=III−I; III_V=V−III; I_V=V−I

Use the matching field units and the exact boundary, ordering and reference rules above.

Output field	Meaning	Value type
result	Structured result; its nested fields below contain the actual calculation or selected reference	object
result.observedOneToThreeMs	Observed One To Three Ms	number
result.observedThreeToFiveMs	Observed Three To Five Ms	number
result.observedOneToFiveMs	Observed One To Five Ms	number

json

{
  "input": {
    "independentlyIdentifiedWaveOneMs": 1,
    "independentlyIdentifiedWaveThreeMs": 3,
    "independentlyIdentifiedWaveFiveMs": 5
  },
  "output": {
    "result": {
      "observedOneToThreeMs": 2,
      "observedThreeToFiveMs": 2,
      "observedOneToFiveMs": 4
    }
  }
}

Limitations and assumptions

Actual acquisition, assessment protocol, instrument version and calibration determine applicability. The tool does not examine a person, classify images, administer a questionnaire or choose diagnostic cutoffs.

Missing required fields, unknown fields, wrong types and violated rules return input issues. Numeric values and outputs must be finite. Extremely large composite outputs are rejected.

Alternative or Complementary methods

For a related step, use VEP P100 Calculator: P100 is an identified component of a visual evoked-potential recording. For a complementary comparison, use SSEP N20 Calculator: N20 is an identified negative component of a somatosensory evoked potential.

References

ABR Interpeak Latency Calculator — tool.io

Similar or alternative tools

VEP P100 Calculator
P100 is an identified component of a visual evoked-potential recording.
SSEP N20 Calculator
N20 is an identified negative component of a somatosensory evoked potential.