Neurovascular coupling in the developing neonatal brain at rest

The neonatal brain is an extremely dynamic organization undergoing essential development in terms of connectivity and function. Several functional imaging investigations of the developing brain have found neurovascular coupling (NVC) patterns that contrast with those observed in adults. These discre...

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Bibliographic Details
Published in:Human brain mapping 2020-02, Vol.41 (2), p.503-519
Main Authors: Nourhashemi, Mina, Mahmoudzadeh, Mahdi, Goudjil, Sabrina, Kongolo, Guy, Wallois, Fabrice
Format: Article
Language:English
Subjects:
Baby foods
Brain
Cerebral cortex
Coupling
diffuse correlation spectroscopy
electroencephalography
Hemodynamic responses
Infants
Infants (Premature)
Life Sciences
near‐infrared spectroscopy
Neonates
Neural networks
Neuroimaging
Neurons
Newborn babies
premature neurovascular coupling
resting state
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Summary:The neonatal brain is an extremely dynamic organization undergoing essential development in terms of connectivity and function. Several functional imaging investigations of the developing brain have found neurovascular coupling (NVC) patterns that contrast with those observed in adults. These discrepancies are partly due to that NVC is still developing in the neonatal brain. To characterize the vascular response to spontaneous neuronal activations, a multiscale multimodal noninvasive approach combining simultaneous electrical, hemodynamic, and metabolic recordings has been developed for preterm infants. Our results demonstrate that the immature vascular network does not adopt a unique strategy to respond to spontaneous cortical activations. NVC takes on different forms in the same preterm infant during the same recording session in response to very similar types of neural activation. This includes (a) positive stereotyped hemodynamic responses (increases in HbO, decreases in HbR together with increases in rCBF and rCMRO2), (b) negative hemodynamic responses (increases in HbR, decreases in HbO together with decreases in rCBF and rCMRO2), and (c) Increases and decreases in both HbO‐HbR and rCMRO2 together with no changes in rCBF. Age‐related NVC maturation is demonstrated in preterm infants, which can contribute to a better understanding/prevention of cerebral hemodynamic risks in these infants.
ISSN:1065-9471
1097-0193
DOI:10.1002/hbm.24818