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Related Experiment Video

Updated: May 26, 2026

Implantation of Radiotelemetry Transmitters Yielding Data on ECG, Heart Rate, Core Body Temperature and Activity in Free-moving Laboratory Mice

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A Fast Passive Data Transmission Method for ENG Telemetry.

Lixia Zhou¹, Nick Donaldson

¹Implanted Devices Group, Department of Medical Physics & Bioengineering, University College London, London, United Kingdom.

Neuromodulation : Journal of the International Neuromodulation Society

|December 14, 2011

Summary

This summary is machine-generated.

This study introduces Passive Phase Shift Modulation, a new method for transmitting high-speed neural signals from implants. It efficiently conveys data over various distances with minimal power usage, suitable for advanced neuromodulation devices.

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Area of Science:

Biomedical Engineering
Neuroscience
Implantable Devices

Background:

Effective data transmission from implantable devices is crucial for advanced neuromodulation.
Existing methods may have limitations in bandwidth or power efficiency.

Purpose of the Study:

To develop a high bit-rate passive method for transmitting electrophysiological signals from implants.
To ensure the method functions effectively across a wide range of coupling coefficients.

Main Methods:

Developed and theoretically analyzed a novel Passive Phase Shift Modulation technique.
Validated the method through computer simulations.
Implemented and tested the system in a laboratory setting.

Main Results:

Successfully transmitted a 222 kbit/s binary signal on a 4-MHz carrier.
Achieved reliable data transfer with coil-coil spacings up to 70 mm.
Demonstrated low additional power consumption (approx. 2 mW) in the implant.

Conclusions:

Passive Phase Shift Modulation is a viable and efficient method for implantable neural signal transmission.
The technique supports high bit-rates necessary for complex neuromodulation applications.
This method is suitable for integration into future conditional neuromodulation implants.