<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The term sensitivity is sometimes misused when discussing volume impedance measurements. This is a critique of the name of the quantity sensitivity, as well as pointing out how the term easily can be misinterpreted. To resolve the issue, a shift of focus towards volume impedance density, which is a more useful quantity, is proposed. A new parameter, perceptivity, is introduced. Perceptivity is useful tool for characterization of measurement systems, to objectively compare systems, and to formulate instrument specifications.</p></abstract>

The term sensitivity is sometimes misused when discussing volume impedance measurements. This is a critique of the name of the quantity sensitivity, as well as pointing out how the term easily can be misinterpreted. To resolve the issue, a shift of focus towards volume impedance density, which is a more useful quantity, is proposed. A new parameter, perceptivity, is introduced. Perceptivity is useful tool for characterization of measurement systems, to objectively compare systems, and to formulate instrument specifications.

On sensitivity in transfer impedance measurements

Journal of Electrical Bioimpedance

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"On sensitivity in transfer impedance measurements"}

The term sensitivity is sometimes misused when discussing volume impedance measurements. This is a critique of the name of the quantity sensitivity, as well as...

Material	Conductivity (S/m)	Resistivity (Ωm)
lowConductivity	0.1	10
mediumConductivity	1	1
highConductivity	10	0.1

Parameter	Model A	Model B	Model C
Sim. 1	12.645 Ω	12.645 Ω	10.985 Ω
Sim. 2	11.736 Ω	11.736 Ω	10.076 Ω
Sim. 3	13.545 Ω	13.545 Ω	11.885 Ω
Sim. 4	12.545 Ω	12.545 Ω	10.885 Ω
Ψ_m	-3.636	-3.636	-3.636
Ψ_g	3.600	3.600	3.600
Ψ	-0.400	-0.400	-0.400
Ψ_rm	-0.288	-0.288	-0.331
Ψ_rg	0.266	0.266	0.303
Ψ_r	-0.032	-0.032	-0.036

On sensitivity in transfer impedance measurements

Pubblicato online: 31 dic 2018

Pagine: 159 - 162

Ricevuto: 15 dic 2018

DOI: https://doi.org/10.2478/joeb-2018-0020

Parole chiave
Bioimpedance, perceptivity, sensitivity

© 2018 F.J. Pettersen published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Fig.1

Fig.2

Fig.3

Electrical properties of the materials used in FEM simulations.

Simulated impedances and associated perceptivities for the three models. Units for perceptivities are left out since we are considering change in phenomena which can be non-physical changes.

On sensitivity in transfer impedance measurements

Pubblicato online: 31 dic 2018

Pagine: 159 - 162

Ricevuto: 15 dic 2018

DOI: https://doi.org/10.2478/joeb-2018-0020

Parole chiaveBioimpedance, perceptivity, sensitivity

© 2018 F.J. Pettersen published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Fig.1

Fig.2

Fig.3

Electrical properties of the materials used in FEM simulations.

Simulated impedances and associated perceptivities for the three models. Units for perceptivities are left out since we are considering change in phenomena which can be non-physical changes.

Parole chiave
Bioimpedance, perceptivity, sensitivity