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Related Experiment Videos

Miniature three-function transmitting system for single neuron recording, wireless brain stimulation and marking.

C Pinkwart, H W Borchers

    Journal of Neuroscience Methods
    |August 1, 1987
    PubMed
    Summary

    A new telemetric micro-transmitting system enables wireless extracellular single unit recording and electrical brain stimulation in small animals. This system allows for precise site marking and remote control of stimulation parameters for advanced neuroscience research.

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    Area of Science:

    • Neuroscience
    • Bioengineering
    • Animal Research Technology

    Background:

    • Accurate electrophysiological recordings and targeted brain stimulation are crucial for understanding neural circuits.
    • Existing methods for freely moving animals often face limitations in wireless control and site specificity.

    Purpose of the Study:

    • To develop and validate a novel telemetric micro-transmitting system for simultaneous extracellular single unit recording and electrical brain stimulation.
    • To enable precise localization and marking of recording and stimulation sites in small freely moving animals.

    Main Methods:

    • A compact (2.38 g) telemetric system utilizing frequency modulation for action potential transmission up to 10 m.
    • An inductively powered circuit integrated with the transmitter for electrical brain stimulation via recording electrodes.

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  • Wireless remote control of biphasic current pulse frequency and duration.
  • Marking of recording and stimulation sites using iron deposits.

    • Main Results:

    • Successful extracellular single unit recording and transmission of action potentials over distances up to 10 m.
    • Demonstrated feasibility of electrical brain stimulation through recording electrodes with wireless control of stimulation parameters.
    • Effective marking of brain recording and stimulation sites using iron deposits.

    Conclusions:

    • The developed telemetric micro-transmitting system offers a versatile and non-invasive tool for advanced neuroscience research in freely moving small animals.
    • This technology facilitates precise neural circuit investigation through combined recording, stimulation, and site localization capabilities.