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Related Experiment Video

Updated: Jun 26, 2026

Viral Tracing of Genetically Defined Neural Circuitry
13:06

Viral Tracing of Genetically Defined Neural Circuitry

Published on: October 17, 2012

Genetically timed, activity-sensor and rainbow transsynaptic viral tools.

Zsolt Boldogkoi1, Kamill Balint, Gautam B Awatramani

  • 1Department of Medical Biology, Faculty of Medicine, University of Szeged, Somogyi B. u. 4., Szeged, H-6720, Hungary.

Nature Methods
|January 6, 2009
PubMed
Summary
This summary is machine-generated.

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Researchers engineered pseudorabies viruses (PRVs) to optically track neural activity. This method helps map complex brain circuits and understand neuronal connections.

Area of Science:

  • Neuroscience
  • Molecular Biology
  • Genetics

Background:

  • Understanding neural circuits is crucial for deciphering brain function.
  • Current methods for mapping neuronal connections can be limited in scope and resolution.
  • Visualizing activity in spatially intermingled neurons presents a significant challenge.

Purpose of the Study:

  • To develop a novel viral tool for optically reporting neural activity.
  • To enable the investigation of neural circuit dynamics in complex brain architectures.
  • To define specific time windows for studying early neuronal responses post-infection.

Main Methods:

  • Development of retrograde, transsynaptic pseudorabies viruses (PRVs).
  • Genetic engineering of PRVs to express genetically encoded activity sensors.

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Conditional Genetic Transsynaptic Tracing in the Embryonic Mouse Brain
11:03

Conditional Genetic Transsynaptic Tracing in the Embryonic Mouse Brain

Published on: December 22, 2014

Related Experiment Videos

Last Updated: Jun 26, 2026

Viral Tracing of Genetically Defined Neural Circuitry
13:06

Viral Tracing of Genetically Defined Neural Circuitry

Published on: October 17, 2012

Conditional Genetic Transsynaptic Tracing in the Embryonic Mouse Brain
11:03

Conditional Genetic Transsynaptic Tracing in the Embryonic Mouse Brain

Published on: December 22, 2014

  • Incorporation of time-shifted expression of differentially colored fluorescent proteins.
  • Utilizing multicolor PRVs for differentiating and dissecting neural architecture.

    • Main Results:

    • PRVs successfully optically report activity of connected neurons.
    • The engineered system allows for defining early time periods post-infection to study neural activity.
    • Multiple-colored PRVs effectively differentiated and dissected complex brain region architectures.
    • The method provides a way to visualize and analyze neural activity in intermingled neuronal populations.

    Conclusions:

    • Genetically engineered PRVs offer a powerful tool for mapping and understanding neural circuits.
    • This approach facilitates the study of neuronal activity dynamics within complex brain structures.
    • The time-shifted expression system allows for precise temporal analysis of neural circuit function.