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Related Experiment Video

Updated: Jan 8, 2026

Localization of the Locus Coeruleus in the Mouse Brain
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Locus coeruleus norepinephrine neurons facilitate orbitofrontal cortex remapping and behavioral flexibility.

M Cameron Ogg1, Benjamin J Lansdell1, Hunter T Franks1

  • 1Department of Developmental Neurobiology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.

Cell Reports
|December 13, 2025
PubMed
Summary

The locus coeruleus (LC) helps the orbitofrontal cortex (OFC) update behavior representations. This LC-norepinephrine (NE) signaling is key for behavioral flexibility and adapting to changing task outcomes.

Keywords:
CP: neurosciencebehavioral flexibilitycalcium imaginglocus coeruleusneural circuitsneuromodulationnorepinephrineorbitofrontal cortexreversal learningstate maps

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Area of Science:

  • Neuroscience
  • Behavioral Science

Background:

  • The orbitofrontal cortex (OFC) is crucial for guiding behavior by maintaining representations of task-related information and expected outcomes.
  • Updating these representations is essential for behavioral change when actions lead to undesirable results.

Purpose of the Study:

  • To investigate the role of the locus coeruleus (LC) in facilitating orbitofrontal cortex (OFC) remapping for behavioral flexibility.
  • To elucidate the mechanism by which LC-norepinephrine (NE) signaling influences OFC state map stability and task adaptation.

Main Methods:

  • Utilized a reward-based behavioral flexibility task in animal models.
  • Employed microendoscopic calcium imaging in the OFC to monitor neural activity.
  • Manipulated LC neuronal activity (silencing and enhancement) during task reversal phases.

Main Results:

  • LC activity dynamically reflected task outcomes on a trial-by-trial basis, evolving with training and proficiency.
  • OFC representations of task information emerged with training, were disrupted during reversal, and reappeared reflecting new contingencies.
  • LC silencing impaired OFC remapping and increased perseverative behavior; enhanced LC activity hindered new map stabilization and task proficiency.

Conclusions:

  • The locus coeruleus (LC) plays a critical role in facilitating OFC remapping, essential for behavioral flexibility.
  • Bidirectional LC-norepinephrine (NE) signaling modulates OFC state map stability, thereby regulating the ability to adapt behavior to changing outcomes.