Bioelectric Uncertainty, Stimulation & EIT

Build a GUM interval budget, test the chronaxie energy optimum, and reconstruct small conductivity changes from a discrete EIT forward model.

Chapter 7
Chapter 8 bridge
GUM
EIT
stimulation

Type A mean

1.00 ms

Definition Type B

3.46 ms

Combined standard

3.63 ms

Expanded, k = 2

7.26 ms

Independent uncertainty budget

Component	Evaluation	Standard uncertainty (ms)
Repeatability of mean	SD / √N	1.00
Fiducial definition	Rectangular half-range / √3	3.46
Endpoint quantization	Two independent uniform endpoints	0.41

Averaging cannot remove definition uncertainty

Type ACombined uncertainty

Model scope

GUM budget is a stipulated interval-measurement experiment, not an automated QT detector. Type A is uncertainty of a mean, independent rectangular fiducial-definition uncertainty and two independent sampling endpoints; k=2 is approximate. EIT is a coarse 2D circular resistor network, 16 point electrodes, unit sheet conductance and arbitrary voltage scale, no contact impedance or anatomical model. Stimulation is virtual only, not safety or dosing guidance.

Preparing the simulation…

Conceptual bridges & related modules

QRS Detection & HRV Analyzer
companion · Chapter 7
Separate interval repeatability, fiducial definition, and sampling uncertainty.
Minimum-Norm Source Localization
companion · Chapter 7
Compare EEG and discrete EIT regularized inversions and model mismatch.
Conformal Interval Explorer
companion · Chapter 9 · Section 11
Distinguish metrological uncertainty from predictive coverage.
Reproducibility Auditor
companion · Chapter 9 · Section 11
Preserve units, recording provenance, forward assumptions, and test evidence.