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Related Experiment Videos

A grid system and a microsyringe for single cell recording.

C F Crist1, D S Yamasaki, H Komatsu

  • 1Laboratory of Sensorimotor Research, National Eye Institute, Bethesda, MD 20892.

Journal of Neuroscience Methods
|December 1, 1988
PubMed
Summary

Two novel instruments aid single-cell and chemical injection studies in awake monkeys. These tools facilitate precise microelectrode or microsyringe use and neuronal recording during injections.

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Area of Science:

  • Neuroscience
  • Biomedical Engineering
  • Surgical Instrumentation

Background:

  • Accurate single-cell analysis and targeted chemical injections are crucial in neuroscience research.
  • Previous methods for in vivo studies in awake subjects faced challenges with precision and simultaneous recording.

Purpose of the Study:

  • To present the designs of two innovative instruments for enhanced single-cell and chemical injection studies.
  • To demonstrate the utility of these instruments in awake primate models.

Main Methods:

  • Design and implementation of a plastic grid guide for parallel microelectrode/microsyringe penetrations.
  • Development of a specialized microsyringe capable of microliter injections and concurrent neuronal activity recording.

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Main Results:

  • The plastic grid enables consistent, parallel probe insertions, improving experimental reproducibility.
  • The injection syringe successfully delivered microliter volumes while simultaneously capturing neuronal signals.

Conclusions:

  • These instruments offer significant advantages for high-precision neurobiological research in awake animals.
  • The developed tools enhance the capability for studying cellular function and targeted interventions in vivo.