F-Wave Chronodispersion Calculator
Range of actual independently qualified F-wave repeat latencies, not nerve velocity, continuous dispersion or a universal normal threshold.
Description
F-wave chronodispersion measures the span of independently qualified response latencies.
F-wave chronodispersion measures the span of independently qualified response latencies.1
It is distinct from a mean latency or a waveform peak search.
When to use F-Wave Chronodispersion 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 F-Wave Chronodispersion Calculator and understand its results
- Establish the assessment or recording protocol, units, instrument version and independently applicable reference or calibration.
- Enter independentlyQualifiedFwaveLatenciesMs, using the field meanings and rules below, then run the tool.
- Read result.observedFwaveChronodispersionMs, result.observedMinimumFwaveLatencyMs, result.observedMaximumFwaveLatencyMs. 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 |
|---|---|---|---|
| independentlyQualifiedFwaveLatenciesMs | Independently qualified fwave latencies ms | list of number | Required |
Require a nonempty nonnegative qualified latency list. Return its maximum, minimum and maximum-minus-minimum milliseconds. One response returns zero chronodispersion.
chronodispersionMs=max(latencies)−min(latencies) 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.observedFwaveChronodispersionMs | Observed Fwave Chronodispersion Ms | number |
| result.observedMinimumFwaveLatencyMs | Observed Minimum Fwave Latency Ms | number |
| result.observedMaximumFwaveLatencyMs | Observed Maximum Fwave Latency Ms | number |
{
"input": {
"independentlyQualifiedFwaveLatenciesMs": [
20,
22,
25
]
},
"output": {
"result": {
"observedFwaveChronodispersionMs": 5,
"observedMinimumFwaveLatencyMs": 20,
"observedMaximumFwaveLatencyMs": 25
}
}
}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. Lists and matrices must be dense, without missing cells. Numeric lists allow at most 10000 entries; ordinary string lists allow at most 128 strings of 128 UTF-16 units each; numeric matrices allow at most 128 rows and 128 columns, subject to narrower requirements above. Extremely large composite outputs are rejected.
Alternative or Complementary methods
For a related step, use F-Wave Latency Calculator: An F-wave recording contains an independently identified late-response component. For a complementary comparison, use ABR Wave V Latency Calculator: ABR wave V is an independently identified auditory brainstem-response component.
References
-
F-Wave Chronodispersion Calculator — tool.io
Similar or alternative tools
- F-Wave Latency Calculator
An F-wave recording contains an independently identified late-response component.
- ABR Wave V Latency Calculator
ABR wave V is an independently identified auditory brainstem-response component.