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

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Neuronal ensembles in cortical function and disease.

¹Neurotechnology Center, Department of Biological Sciences, Columbia University, New York, New York, United States.

Physiological Reviews

|March 6, 2026

Summary

This summary is machine-generated.

Neuronal ensembles, groups of coactive neurons, are key brain modules. Manipulating these ensembles in mice shows they are vital for visual processing and memory, offering therapeutic potential for brain disorders.

Keywords:

assembly attractor calcium imaging domains optogenetics

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Area of Science:

Neuroscience
Systems Neuroscience
Computational Neuroscience

Background:

Neuronal ensembles are fundamental functional units in the cerebral cortex.
These ensembles are crucial for processing information and maintaining memory.
Their role in various brain functions and disorders is increasingly recognized.

Purpose of the Study:

To investigate the role of neuronal ensembles in visual processing and memory formation.
To explore the mechanisms underlying ensemble generation, reactivation, and function.
To examine the involvement of neuronal ensembles in neurological and psychiatric disorders.

Main Methods:

Utilized calcium imaging and optogenetics for high-resolution mapping and manipulation of neuronal ensembles in the mouse visual cortex.
Investigated ensemble dynamics, including coactivation, reactivation, and cross-inhibition.
Examined ensemble alterations in mouse models of neurological diseases.

Main Results:

Neuronal ensembles dominate cortical activity and are essential for visual discrimination and perception.
Ensembles exhibit properties of both short-term and long-term memory storage.
Ensemble activity is altered in models of epilepsy, schizophrenia, Alzheimer's disease, and autism spectrum disorders.
A model of cortical function based on interacting neuronal ensembles was proposed.

Conclusions:

Neuronal ensembles are critical computational units for memory and information processing in the cortex.
Ensemble dysfunction is implicated in various brain diseases, suggesting potential therapeutic targets.
Manipulating neuronal ensembles may offer novel treatment strategies for neurological and psychiatric conditions.