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Related Experiment Video

Updated: Jul 2, 2026

New Framework for Understanding Cross-Brain Coherence in Functional Near-Infrared Spectroscopy (fNIRS) Hyperscanning Studies

New Framework for Understanding Cross-Brain Coherence in Functional Near-Infrared Spectroscopy (fNIRS) Hyperscanning Studies

Published on: October 6, 2023

Finding coherence in spontaneous oscillations.

Patrick J Drew¹, Jeff H Duyn, Eugene Golanov

¹Department of Physics, University of California at San Diego, La Jolla, Califorina 92093-0374, USA.

Nature Neuroscience

|August 30, 2008

Summary

This summary is machine-generated.

Spontaneous ultra-slow oscillations in human brain signals are common but poorly understood. New research reveals these slow brain waves synchronize between connected brain regions across both hemispheres.

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Area of Science:

Neuroscience
Brain Activity
Human Physiology

Background:

Ultra-slow oscillations (USOs) are widespread in brain signals.
The origins and functional roles of USOs remain largely unknown.
Understanding USO generation is critical for deciphering brain function.

Discussion:

This study investigated the spatial distribution of spontaneous USOs.
Functional connectivity was assessed using electroencephalography (EEG) data.
Interhemispheric synchronization of USO activity was analyzed.

Key Insights:

Spontaneous ultra-slow oscillations exhibit significant correlations between functionally related brain areas.
This synchronization occurs across the left and right hemispheres in humans.
USOs may play a role in interhemispheric communication and coordination.

Outlook:

Further research is needed to elucidate the precise mechanisms driving USO synchronization.
Investigating the functional implications of USO coupling in various cognitive tasks is warranted.
These findings could inform future neuroimaging techniques and brain-computer interfaces.