Network state transitions during cortical development

Michelle W Wu^#^{1

2

3}, Nazim Kourdougli^#¹, Carlos Portera-Cailliau^{4

5}

Affiliations

¹ Department of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA.
² Neuroscience Interdepartmental Graduate Program, University of California Los Angeles, Los Angeles, CA, USA.
³ UCLA-Caltech Medical Scientist Training Program, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA.
⁴ Department of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA. cpcailliau@mednet.ucla.edu.
⁵ Department of Neurobiology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA. cpcailliau@mednet.ucla.edu.

^# Contributed equally.

PMID: 38783147
DOI: 10.1038/s41583-024-00824-y

Review

Network state transitions during cortical development

Michelle W Wu et al. Nat Rev Neurosci. 2024.

. 2024 May 23.

doi: 10.1038/s41583-024-00824-y. Online ahead of print.

Authors

Michelle W Wu^#^{1

2

3}, Nazim Kourdougli^#¹, Carlos Portera-Cailliau^{4

5}

Affiliations

¹ Department of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA.
² Neuroscience Interdepartmental Graduate Program, University of California Los Angeles, Los Angeles, CA, USA.
³ UCLA-Caltech Medical Scientist Training Program, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA.
⁴ Department of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA. cpcailliau@mednet.ucla.edu.
⁵ Department of Neurobiology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA. cpcailliau@mednet.ucla.edu.

^# Contributed equally.

PMID: 38783147
DOI: 10.1038/s41583-024-00824-y

Abstract

Mammalian cortical networks are active before synaptogenesis begins in earnest, before neuronal migration is complete, and well before an animal opens its eyes and begins to actively explore its surroundings. This early activity undergoes several transformations during development. The most important of these is a transition from episodic synchronous network events, which are necessary for patterning the neocortex into functionally related modules, to desynchronized activity that is computationally more powerful and efficient. Network desynchronization is perhaps the most dramatic and abrupt developmental event in an otherwise slow and gradual process of brain maturation. In this Review, we summarize what is known about the phenomenology of developmental synchronous activity in the rodent neocortex and speculate on the mechanisms that drive its eventual desynchronization. We argue that desynchronization of network activity is a fundamental step through which the cortex transitions from passive, bottom-up detection of sensory stimuli to active sensory processing with top-down modulation.

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References

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Network state transitions during cortical development

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Network state transitions during cortical development

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