Regional specialization in prefrontal cortex manifests in the reliability of task progression codes
Jennifer A Guidera1, Daniel P Gramling2, Alison E Comrie2
1UCSF-UC Berkeley Graduate Program in Bioengineering, University of California, San Francisco, San Francisco, CA 94158, USA; Medical Scientist Training Program, University of California, San Francisco, San Francisco, CA 94158, USA.
Neuron
|March 7, 2026
Summary
Neural representations in the orbitofrontal cortex (OFC) and dorsomedial prefrontal cortex (dmPFC) differ. Task progression is encoded distinctly in each area, supporting their specialized functions in complex cognitive tasks.
Area of Science:
- Neuroscience
- Cognitive Neuroscience
- Prefrontal Cortex Function
Background:
- The prefrontal cortex (PFC) is crucial for complex task performance.
- Orbitofrontal cortex (OFC) handles outcome information; dorsomedial PFC (dmPFC) manages sustained effort and action selection.
- Neural representations in OFC and dmPFC are not fully understood regarding their functional specialization.
Purpose of the Study:
- To investigate how neural activity in the OFC and dmPFC represents task progression.
- To determine if distinct patterns of neural activity underlie the specialized functions of OFC and dmPFC.
- To clarify how similar neural representations support different cognitive functions within the PFC.
Main Methods:
- Electrophysiological recordings were conducted in rats performing a spatial alternation task.
- Neural activity in the OFC and dmPFC was analyzed.
- Patterns of across-trial reliability for task progression were compared between the two regions.
Main Results:
- Task progression is represented in both the OFC and dmPFC.
- Distinct patterns of across-trial reliability in neural activity were observed between the OFC and dmPFC.
- These distinct patterns correlate with the known functional specializations of each brain area.
Conclusions:
- Reliable, task-phase-specific neural activity patterns differ across prefrontal regions.
- These differences are well-suited to support the distinct computational roles of the OFC and dmPFC.
- Understanding these distinct representations is key to deciphering PFC contributions to complex cognition.
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