Related Experiment Video
Updated: Jul 10, 2026
11:12
Controlling Parkinson's Disease With Adaptive Deep Brain Stimulation
Published on: July 16, 2014
A customizable multi-channel stimulator for cortical neuroprosthesis.
J M Ferrández1, E Liaão, P Bonomini
1Electronic and Computer Technology Department at Universidad Politécnica de Cartagena, Spain. jm.ferrandez@upct.es
Summary
This study presents a customizable cortical stimulator for visual prosthetics. The device safely delivers precise electrical stimulation to the visual cortex for potential blindness treatment.
Area of Science:
- Neuroscience
- Biomedical Engineering
- Medical Devices
Background:
- Cortical stimulation is a promising approach for visual prostheses.
- Existing systems require customization for individual patient needs and tissue properties.
Purpose of the Study:
- To present a simple, fully customizable architecture for a cortical stimulator.
- To develop a device for precise current injection into the primary visual cortex (V1).
Main Methods:
- A 3D penetrating multielectrode array was designed for V1 implantation.
- The architecture utilizes a transistor-based current injection stage and a microprocessor with programmable waveforms.
- The system was validated for safe and precise current delivery in animal models.
Main Results:
- The stimulator architecture allows for adaptable current levels based on electrode and tissue impedance.
- Programmable waveforms and signal amplitudes were successfully implemented.
- Safe and precise current injection was demonstrated during acute animal experiments.
Conclusions:
- The developed cortical stimulator architecture is suitable for creating customized visual neuroprostheses.
- This technology offers a pathway for restoring vision in individuals with blindness.
