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Related Experiment Video

Updated: Sep 5, 2025

Induction of an Isoelectric Brain State to Investigate the Impact of Endogenous Synaptic Activity on Neuronal Excitability In Vivo

Induction of an Isoelectric Brain State to Investigate the Impact of Endogenous Synaptic Activity on Neuronal Excitability In Vivo

Published on: March 31, 2016

A transcriptomic axis predicts state modulation of cortical interneurons.

Stéphane Bugeon¹, Joshua Duffield², Mario Dipoppa^2,3

¹UCL Queen Square Institute of Neurology, University College London, London, UK. s.bugeon@ucl.ac.uk.

|July 6, 2022

Summary

This summary is machine-generated.

Cortical inhibitory neuron subtypes show diverse brain activity patterns, primarily organized by their molecular profiles. This molecular organization helps explain how these diverse neurons influence brain states in the visual cortex.

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Published on: April 20, 2018

Comprehensive Analysis of Transcription Dynamics from Brain Samples Following Behavioral Experience

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Published on: August 26, 2014

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Last Updated: Sep 5, 2025

Induction of an Isoelectric Brain State to Investigate the Impact of Endogenous Synaptic Activity on Neuronal Excitability In Vivo

Induction of an Isoelectric Brain State to Investigate the Impact of Endogenous Synaptic Activity on Neuronal Excitability In Vivo

Published on: March 31, 2016

Ex Utero Electroporation and Organotypic Slice Cultures of Embryonic Mouse Brains for Live-Imaging of Migrating GABAergic Interneurons

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Published on: April 20, 2018

Comprehensive Analysis of Transcription Dynamics from Brain Samples Following Behavioral Experience

Comprehensive Analysis of Transcription Dynamics from Brain Samples Following Behavioral Experience

Published on: August 26, 2014

Area of Science:

Neuroscience
Molecular Biology
Systems Neuroscience

Background:

Transcriptomics reveals extensive molecular diversity among cortical inhibitory neurons.
The functional implications of this molecular diversity for neuronal activity in vivo remain largely unknown.

Purpose of the Study:

To investigate whether diverse molecular subtypes of inhibitory neurons in the primary visual cortex (V1) exhibit distinct activity patterns in vivo.
To determine how molecular variation relates to neuronal function and brain state modulation.

Main Methods:

Combined in vivo two-photon calcium imaging in mouse V1 with transcriptomic analysis of identified neurons.
Classified inhibitory neurons into a hierarchical system (subclasses, types, subtypes) based on gene expression.
Analyzed neuronal responses to visual stimuli and modulation by brain states.

Main Results:

Inhibitory neuron subtypes displayed diverse brain state correlates, organized by a primary axis of transcriptomic variation.
Visual stimulus responses differed mainly at the subclass level, with suppression in Sncg and excitation in others.
Brain state modulation was predictable from the main transcriptomic axis, correlating with cellular properties like spike width and axonal projection patterns.

Conclusions:

A single transcriptomic principle largely organizes the diverse activity patterns of inhibitory neuron subtypes in V1.
This principle links molecular identity to distinct functional roles in state-dependent cortical processing.