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Multi-electrode Array Recordings of Neuronal Avalanches in Organotypic Cultures

Multi-electrode Array Recordings of Neuronal Avalanches in Organotypic Cultures

Published on: August 1, 2011

A robust activity marking system for exploring active neuronal ensembles.

Andreas T Sørensen¹, Yonatan A Cooper¹, Michael V Baratta²

¹McGovern Institute for Brain Research, Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, United States.

|September 24, 2016

Summary

This summary is machine-generated.

Researchers developed a Robust Activity Marking (RAM) system to identify neuronal ensembles. This versatile tool enhances understanding of how the brain encodes experiences and forms lasting neural changes.

Keywords:

D. melanogaster Npas4 RAM Tet-Off system activity mapping cFos mouse neural ensemble neuroscience rat

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Last Updated: Mar 14, 2026

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Published on: August 1, 2011

Author Spotlight: Advancing Large-Scale Neural Dynamics Through HD-MEA Technology

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Recording Large-scale Neuronal Ensembles with Silicon Probes in the Anesthetized Rat

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Published on: October 19, 2011

Area of Science:

Neuroscience
Molecular Biology
Genetics

Background:

Understanding neural circuits requires identifying neuronal ensembles responsible for encoding experiences.
Existing methods for marking active neurons have limitations in sensitivity, selectivity, and temporal control.

Purpose of the Study:

To develop a novel system for identifying and interrogating neuronal ensembles involved in experience encoding.
To create a versatile and highly sensitive tool for neuroscience research applicable across species.

Main Methods:

Development of the Robust Activity Marking (RAM) system utilizing an optimized synthetic activity-regulated promoter.
Incorporation of a modified Tet-Off system for improved temporal control of neuronal activity marking.
Packaging the RAM system into a single adeno-associated virus (AAV) for ease of use and broad applicability.
Development of Cre-dependent RAM (CRAM) for cell-type-specific and connectivity studies.

Main Results:

The RAM system demonstrates high sensitivity and selectivity in marking active neuronal ensembles.
The compact AAV packaging allows for versatile application in various model organisms, including mice, rats, and flies.
CRAM enables targeted investigation of specific neuronal populations and their connections.

Conclusions:

The RAM system provides a powerful and versatile tool for identifying and studying neuronal ensembles.
This technology significantly advances the ability to investigate neural circuit function and experience-dependent plasticity.
RAM and CRAM offer new possibilities for exploring brain function across diverse species and cell types.