Related Experiment Video
Updated: Jul 10, 2026
06:30
A Multi-Electrode Array Platform for Modeling Epilepsy Using Human Pluripotent Stem Cell-Derived Brain Assembloids
Published on: September 27, 2024
A wideband wireless neural stimulation platform for high-density microelectrode arrays
Frank B Myers1, Jim A Simpson, Maysam Ghovanloo
1Dept. of Electr. & Comput. Eng., North Carolina State Univ., Raleigh, NC, USA.
Summary
Researchers developed a novel wireless neural stimulator, Interestim-2B (IS-2B), controlled by a PC via USB 2.0. This system enables real-time, multi-site neural stimulation for applications like visual prostheses.
Area of Science:
- Biomedical Engineering
- Neuroscience
- Implantable Devices
Background:
- Neural stimulation systems require reliable wireless data and power transmission.
- Controlling complex stimulation patterns from external devices is challenging.
Purpose of the Study:
- To present a novel wireless neural microstimulator system (Interestim-2B) for controlled neural stimulation.
- To demonstrate real-time control of the stimulator using sensory input for a visual prosthesis application.
Main Methods:
- Developed a modular wireless stimulator (IS-2B) with 32 stimulation sites per module, supporting various stimulation schemes.
- Implemented a PC control system via USB 2.0 interface with a novel dual-carrier wireless link for separate data (FSK, 3 Mb/s) and power (Class-E amplifier, 1 MHz) transmission.
- Created software for generating multi-site stimulation commands based on streaming sensory data (e.g., webcam images).
Main Results:
- Successfully demonstrated the IS-2B system as a visual prosthesis.
- Generated real-time pulse-frequency modulated stimuli based on webcam input, projected onto an 11x11 LED matrix representing a microelectrode array.
- Achieved efficient wireless data and power transmission with minimized cross-coupling between coil pairs.
Conclusions:
- The developed system provides a flexible and controllable platform for implantable neural microstimulation.
- This technology shows promise for advanced neuroprosthetic applications, particularly in restoring visual function.