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A programmable closed-loop recording and stimulating wireless system for behaving small laboratory animals.

Gian Nicola Angotzi1, Fabio Boi2, Stefano Zordan3

  • 11] Department of Neuroscience and Brain Technologies, Istituto Italiano di Tecnologia, Genova, Italy [2] Department of Robotics, Brain and Cognitive Sciences, Istituto Italiano di Tecnologia, Genova, Italy.

Scientific Reports
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Summary
This summary is machine-generated.

This study introduces a portable wireless system for real-time bidirectional interaction with the central nervous system in freely behaving animals. The device enables wireless neural recording and programmable stimulation, validated in rat experiments.

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Area of Science:

  • Neuroscience
  • Biomedical Engineering
  • Wearable Technology

Background:

  • Current methods for studying the central nervous system in behaving animals often involve wired connections, limiting natural movement.
  • Bidirectional interfaces for neural recording and stimulation are crucial for understanding brain function and developing therapies.

Purpose of the Study:

  • To develop and validate a portable, microcontroller-based wireless system for real-time, bidirectional interaction with the central nervous system.
  • To enable wireless recording of neural activity and programmable stimulation in freely behaving small laboratory animals.

Main Methods:

  • A 16-channel wireless system utilizing a microcontroller was designed for bidirectional neural interaction.
  • The system allows for wireless transmission and storage of neural data on a personal computer.
  • Programmable biphasic current stimuli can be triggered in real-time based on neural activity or animal behavior.

Main Results:

  • The system was successfully tested through bench tests and in vivo measurements.
  • Chronic implantation in behaving rats with multi-channel microwire arrays demonstrated system efficacy.
  • An intuitive graphical user interface was developed for system configuration and monitoring.

Conclusions:

  • The developed portable wireless system offers a viable solution for advanced neuroscience research in freely behaving animals.
  • This technology facilitates real-time, closed-loop experiments, enhancing the study of neural circuits and behaviors.
  • The system's wireless and bidirectional capabilities represent a significant advancement in neurophysiological research tools.