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Related Experiment Videos

High time resolution fluorescence imaging with a CCD camera.

N Lasser-Ross1, H Miyakawa, V Lev-Ram

  • 1Department of Physiology, New York Medical College, Valhalla 10595.

Journal of Neuroscience Methods
|February 1, 1991
PubMed
Summary
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Researchers developed a high-speed, sensitive camera system for synchronized imaging of low-light fluorescence and membrane potential. This advanced system enables precise recording of calcium transients in neuronal cells.

Area of Science:

  • Neuroscience
  • Biophysics
  • Imaging Technology

Background:

  • Accurate measurement of neuronal activity requires high-resolution imaging synchronized with electrophysiological recordings.
  • Existing imaging systems often lack the speed and sensitivity needed for dynamic, low-light biological processes.

Purpose of the Study:

  • To develop and validate a novel, high-speed, sensitive camera system for simultaneous capture of low-light fluorescence and membrane potential.
  • To assess the system's performance in terms of frame rate, accuracy, and dynamic range.

Main Methods:

  • A cooled, scientific-grade CCD camera integrated with a PC/AT computer was utilized.
  • The system achieves high frame rates (100 frames/sec for 18x18 pixels, 40 frames/sec for 50x50 pixels) with minimal lag.

Related Experiment Videos

  • 12-bit digitization and low intrinsic noise ensure high accuracy and dynamic range.

    • Main Results:

    • The camera system demonstrated high-speed image acquisition capabilities.
    • Accurate digitization and low noise levels were confirmed, providing a wide dynamic range.
    • The system successfully recorded calcium-dependent fura-2 fluorescence transients in cerebellar Purkinje cells and leech neurons.

    Conclusions:

    • The developed camera system offers a significant advancement for high-speed, sensitive imaging in neuroscience research.
    • It enables detailed investigation of dynamic cellular processes like calcium signaling in neurons.
    • This technology facilitates synchronized electrophysiological and optical recordings for comprehensive analysis of neuronal function.