Functional Brain Connectivity Develops Rapidly Around Term Age and Changes Between Vigilance States in the Human
Anton Tokariev1,2, Mari Videman3, J Matias Palva2
1Department of Clinical Neurophysiology, HUS Medical Imaging Center anton.tokariev@helsinki.fi.
Cerebral Cortex (New York, N.Y. : 1991)
|September 26, 2015
Summary
Newborn brain connectivity differs between sleep states and matures rapidly post-birth. These findings reveal early functional coupling mechanisms guiding brain network development.
Area of Science:
- Neuroscience
- Developmental Neuroscience
- Computational Neuroscience
Background:
- Large-scale neuronal coupling is crucial for cognitive functions.
- Its emergence and functional roles in newborns remain poorly understood.
- Understanding early brain connectivity is vital for developmental neuroscience.
Purpose of the Study:
- To characterize functional connectivity in healthy newborns.
- To identify changes related to vigilance states (active/quiet sleep).
- To track maturation of connectivity during early postnatal weeks.
Main Methods:
- Utilized multichannel electroencephalography (EEG) in 38 sleeping newborns.
- Recorded data at two distinct neonatal time points.
- Quantified functional connectivity using phase-phase, amplitude-amplitude (AACs), and phase-amplitude correlations.
Main Results:
- Functional connectivity measures significantly differed between sleep states.
- Connectivity demonstrated rapid maturation in the early postnatal period.
- Changes were frequency-specific, most prominent in AACs, and aligned with structural development.
Conclusions:
- Emerging functional connectivity shows distinct patterns between sleep states before clear EEG signatures appear.
- Early cortical events involve unique functional coupling mechanisms.
- These mechanisms guide activity-dependent development of neonatal brain networks.
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