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Operant Procedures for Assessing Behavioral Flexibility in Rats

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Hierarchical Reconfiguration of Neurocognitive Task Set Representations Mediates Cognitive Flexibility.

Stephanie C Leach^1,2, Xitong Chen^3,2, Kai Hwang^3,2

¹Psychological and Brain Sciences, The University of Iowa, Iowa City, IA. stephanie-leach@uiowa.edu.

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience

|June 11, 2026

Summary

This study reveals how the brain updates information at different levels of abstraction to manage tasks. Concrete task rules are flexible but prone to interference, while abstract context updating is slower but more insulated, enabling better behavioral control.

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The Attentional Set Shifting Task: A Measure of Cognitive Flexibility in Mice

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Area of Science:

Cognitive Neuroscience
Neuroimaging
Human Behavior

Background:

Cognitive control organizes information hierarchically, supporting flexible behavior through task switching.
Updating representations across different hierarchical levels is crucial for cognitive flexibility.
The neural mechanisms and behavioral consequences of updating at abstract versus concrete levels remain unclear.

Purpose of the Study:

To investigate the behavioral and neural differences in updating abstract contexts versus concrete task sets.
To examine how hierarchical organization influences cognitive control and task switch costs.
To link representational dynamics in the brain to behavioral performance during hierarchical tasks.

Main Methods:

Utilized functional magnetic resonance imaging (fMRI) and behavioral data from healthy adult participants.
Employed a hierarchical control task designed to dissociate context and task-set reconfiguration.
Quantified trial-to-trial reconfiguration of multivoxel activity patterns to assess neural dynamics.

Main Results:

Subordinate rule switches were faster and more susceptible to task-irrelevant perceptual interference.
Context switches were slower and relatively insulated from perceptual interference, engaging the mid-lateral frontal cortex.
Larger shifts in neural activity patterns correlated with increased reaction time (RT) switch costs across the brain.

Conclusions:

Hierarchical neural representations support flexible updating, with insulated contextual representations enhancing behavioral control.
Concrete sensory-motor plans allow for flexibility but can lead to interference from task-irrelevant stimuli.
Distinct neural systems, including the lateral prefrontal cortex, manage abstract context updating for stability.