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Dynamic Interplay between Prefrontal Theta and Beta Bursts Facilitates Flexible Learning.

Hahyeon Park1,2, Haseong Kim1,2, Eunyoung Yeo1,2

  • 1Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, Korea.

Experimental Neurobiology
|November 5, 2025
PubMed
Summary

Flexible behavior relies on medial prefrontal cortex (mPFC) neural dynamics. Theta and beta brain oscillations in the mPFC coordinate learning to overcome bias, offering insights into cognitive flexibility.

Keywords:
Beta rhythmCognitive flexibilityMedial prefrontal cortexTheta rhythmWorking memory

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Computational Psychiatry

Background:

  • Cognitive flexibility is crucial for adapting to environmental changes.
  • Impaired flexibility is a hallmark of neuropsychiatric disorders.
  • Neural mechanisms of flexible behavior are not fully understood.

Purpose of the Study:

  • Investigate the role of medial prefrontal cortex (mPFC) oscillatory dynamics in flexible learning.
  • Elucidate the neural mechanisms underlying the ability to overcome behavioral bias.
  • Explore the involvement of theta and beta oscillations in cognitive flexibility.

Main Methods:

  • Mice performed a delayed non-match-to-sample task requiring adaptive strategy adjustments.
  • Local field potentials (LFPs) and single-unit activities were recorded from the mPFC.
  • Decoding analysis and oscillatory burst analysis were used to examine neural representations and dynamics.

Main Results:

  • mPFC neural representations evolved as mice adapted to the task.
  • Theta (4-12 Hz) bursts in mPFC neurons encoded upcoming choice information after rule acquisition.
  • Beta (12-30 Hz) bursts correlated with perseverative behavior and inhibited theta-modulated firing during adaptive behavior.

Conclusions:

  • Temporally separated theta and beta bursts in the mPFC act as a dynamic gating mechanism for flexible learning.
  • Beta bursts shape neuronal ensembles modulated by theta bursts, facilitating cognitive flexibility.
  • This neural dynamic provides a mechanistic basis for cognitive flexibility and sheds light on rigidity in disorders like schizophrenia and autism.