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Related Experiment Video

Updated: Feb 20, 2026

In Vivo Intracerebral Stereotaxic Injections for Optogenetic Stimulation of Long-Range Inputs in Mouse Brain Slices

In Vivo Intracerebral Stereotaxic Injections for Optogenetic Stimulation of Long-Range Inputs in Mouse Brain Slices

Published on: September 20, 2019

Making connections in the brain.

Alex Tl Leong¹, Ed X Wu²

¹Laboratory of Biomedical Imaging and Signal Processing, Department of Electrical and Electronic Engineering, University of Hong Kong, Hong Kong SAR, China.

|October 27, 2017

Summary

This summary is machine-generated.

Simultaneous recordings of brain activity and functional MRI (fMRI) signals in rats reveal the neural sources of resting-state fMRI connectivity networks. This research provides crucial insights into how brain regions communicate during rest.

Keywords:

BOLD fMRI calcium recordings neuroscience rat resting-state functional connectivity slow waves

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Co-analysis of Brain Structure and Function using fMRI and Diffusion-weighted Imaging

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Published on: November 8, 2012

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Last Updated: Feb 20, 2026

In Vivo Intracerebral Stereotaxic Injections for Optogenetic Stimulation of Long-Range Inputs in Mouse Brain Slices

In Vivo Intracerebral Stereotaxic Injections for Optogenetic Stimulation of Long-Range Inputs in Mouse Brain Slices

Published on: September 20, 2019

Electrophysiological and Morphological Characterization of Neuronal Microcircuits in Acute Brain Slices Using Paired Patch-Clamp Recordings

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Published on: January 10, 2015

Co-analysis of Brain Structure and Function using fMRI and Diffusion-weighted Imaging

Co-analysis of Brain Structure and Function using fMRI and Diffusion-weighted Imaging

Published on: November 8, 2012

Area of Science:

Neuroscience
Systems Neuroscience
Neuroimaging

Background:

Resting-state functional magnetic resonance imaging (fMRI) is a powerful tool for mapping brain connectivity.
The precise neural underpinnings of resting-state fMRI signals remain incompletely understood.
Understanding these origins is critical for accurate interpretation of brain function and dysfunction.

Purpose of the Study:

To investigate the relationship between direct neuronal activity and fMRI signals during rest.
To elucidate the cellular and network-level origins of resting-state functional connectivity.
To validate and refine models of fMRI signal generation.

Main Methods:

Simultaneous electrophysiological recordings (neuronal activity) and fMRI were performed in the rat brain.
Data were acquired under resting conditions.
Advanced signal processing techniques were employed to analyze both neuronal and fMRI data.

Main Results:

Neuronal activity, particularly local field potentials, showed a strong correlation with BOLD fMRI signals.
Specific patterns of neuronal firing and network synchronization were identified as key contributors to observed functional connectivity.
The findings demonstrate that resting-state fMRI networks largely reflect underlying synchronized neuronal communication.

Conclusions:

Simultaneous recordings provide a direct link between neuronal activity and resting-state fMRI connectivity.
These findings enhance our understanding of the neurophysiological basis of fMRI.
The study validates the use of fMRI for mapping brain networks and offers insights into neural communication during spontaneous brain activity.