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Biomimetic computer-to-brain communication enhancing naturalistic touch sensations via peripheral nerve stimulation
Giacomo Valle1, Natalija Katic Secerovic1,2,3, Dominic Eggemann1
1Laboratory for Neuroengineering, Department of Health Sciences and Technology, Institute for Robotics and Intelligent Systems, ETH Zürich, Zürich, Switzerland.
Nature Communications
|February 20, 2024
Summary
This study introduces a biomimetic neurostimulation framework that mimics natural sensory input, improving mobility and reducing mental effort for individuals with sensorimotor deficits.
Area of Science:
- Neuroscience
- Biomedical Engineering
- Assistive Technology
Background:
- Peripheral nerve stimulation shows promise for sensorimotor deficits but lacks natural sensory feedback.
- Current neurostimulation methods often fail to provide intuitive and physiologically plausible sensory experiences.
Purpose of the Study:
- To design and test a biomimetic neurostimulation framework inspired by natural mechanoreceptor function.
- To develop and evaluate biomimetic stimulation policies for restoring natural sensory information.
- To assess the efficacy of this framework in improving patient mobility and reducing cognitive load.
Main Methods:
- Developed an in-silico model of mechanoreceptors to create biomimetic stimulation policies.
- Experimentally assessed biomimetic stimulation against mechanical touch and linear neuromodulation in cats.
- Implemented the biomimetic neurostimulation framework in a bionic device for human clinical trials (NCT03350061).
Main Results:
- Biomimetic neuromodulation successfully transmitted neural responses to the dorsal root ganglion and spinal cord in cats.
- Neural dynamics induced by biomimetic stimulation closely resembled naturally occurring patterns.
- Clinical trials demonstrated significant improvements in mobility and reductions in mental effort compared to traditional methods.
Conclusions:
- The developed biomimetic neurostimulation framework offers a natural and effective approach for sensory restoration.
- This neuroscience-driven technology holds potential as a model for future assistive neurotechnologies.
- Biomimetic stimulation represents a significant advancement in creating intuitive sensory experiences for individuals with neurological impairments.
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