Impedance Field Telemetry
Impedance Field Telemetry - Related Videos
06:54
Performing Repeated Intraoperative Impedance Telemetry Measurements during Cochlear Implantation
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Cited by 2 •
2023
Here we present a protocol to conduct repeated impedance telemetry measurements during cochlear implantation (CI). They may allow conclusions on the electrode's and implant's function. Repeated impedance measurements enable objective feedback on whether the electrode is positioned inside the perilymph or outside the inner ear.
08:59
Electrochemical Impedance Spectroscopy
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2023
Source: Kara Ingraham, Jared McCutchen, and Taylor D. Sparks, Department of Materials Science and Engineering, The University of Utah, Salt Lake City, UT Electrical resistance is the ability of an electrical circuit element to resist the flow of electricity. Resistance is defined by Ohm's Law: (Equation 1) Where is the voltage and is the current. Ohm's law is useful for determining the resistance of ideal resistors. However, many circuit elements are more complex and can't be described by...
07:51
Voltage Biasing, Cyclic Voltammetry, & Electrical Impedance Spectroscopy for Neural Interfaces
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Cited by 11 •
2012
The electrode-tissue interface of neural recording electrodes can be characterized with electrical impedance spectroscopy (EIS) and cyclic voltammetry (CV). Application of voltage biasing changes the electrochemical properties of the electrode-tissue interface and can improve recording capability. Voltage biasing, EIS, CV, and neural recordings are complementary.
07:54
Long-term Blood Pressure Measurement in Freely Moving Mice Using Telemetry
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Cited by 13 •
2016
The goal of this protocol is to assess systemic blood pressure in conscious freely moving mice using implantable radio-telemetry devices.
07:03
Intrauterine Telemetry to Measure Mouse Contractile Pressure In Vivo
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Cited by 16 •
2015
This manuscript provides a protocol for implanting telemeters in the mouse for the purpose of measuring intrauterine pressures during pregnancy.
FAQs
The measured response includes both resistance and reactance, allowing the system to represent tissue-dependent electrical behavior rather than relying on a single value. Recording how each component changes across locations or over time provides a more detailed account of regional or temporal biological variation for subsequent analysis.
Because measurements are tied to locations as well as time, a distributed field can show whether an electrical change is localized or occurs across a broader biological region. That spatial information complements temporal tracking and may help analysis distinguish regional tissue condition or physiological change from a change observed without location-specific detail.
Telemetry matters because the measurements do not have to remain at the sensing site. After sensors or electrodes record the impedance response, the data can be communicated to a receiving system for analysis. This arrangement supports observation when direct access is limited and can reduce reliance on repeated clinical measurements.
An implementation begins by positioning sensors or electrodes across the biological region, applying low-level electrical signals, and recording tissue-dependent resistance and reactance. The resulting measurements are then transmitted to a receiving system, where their spatial or time-dependent variation can be examined. The sequence links acquisition, communication, and interpretation.
In medicine, this approach may be useful for noninvasive monitoring of physiological changes, tissue condition, or device function. Its combination of distributed sensing and telemetry is particularly relevant when observation over time is valuable. The method may also reduce the need for direct access or repeated clinical measurements during monitoring.
The primary output is a set of impedance measurements associated with locations or times. Analysis can therefore examine changes in physiological state, tissue condition, or device function without requiring each observation to come from direct access or a repeated clinical measurement. Its value lies in supporting continuous observation of those changes.