Related Experiment Video
Updated: May 16, 2025
05:38
The Effect of Anti-Fatigue Decoction on the Behaviors and Serological Indicators in a Central Fatigue Rat Model
Published on: April 12, 2024
234
Origins and consequences of cognitive fatigue
Mathias Pessiglione1, Bastien Blain2, Antonius Wiehler1
1Motivation, Brain and Behavior team, Paris Brain Institute, Pitié-Salpêtrière Hospital, Paris, France; Sorbonne University, Inserm U1127, CNRS U7225, Paris, France.
Trends in Cognitive Sciences
|April 1, 2025
Summary
Cognitive fatigue arises from metabolic changes in brain regions controlling cognition. This increases the effort needed for tasks, shifting decisions toward easier, immediately rewarding actions.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Decision Science
Background:
- Mental fatigue is intuitively understood but mechanistically unclear.
- The impact of cognitive fatigue on neural processing and behavior requires further elucidation.
Purpose of the Study:
- To review experimental findings on cognitive fatigue markers.
- To examine theoretical models of cognitive fatigue.
- To propose a unifying conceptual model for cognitive fatigue.
Main Methods:
- Review of experimental studies inducing cognitive fatigue.
- Analysis of self-report, behavioral, economic, physiological, and neural data.
- Synthesis of biological and motivational theories of fatigue.
Main Results:
- Cognitive fatigue is linked to metabolic alterations in cognitive control regions.
- These alterations increase the 'cost' of cognitive control.
- Fatigue promotes choices favoring low effort and immediate rewards.
Conclusions:
- Proposes the MetaMotiF model, integrating biological and motivational aspects of fatigue.
- Cognitive fatigue originates biologically but influences motivation.
- Metabolic changes in the brain underlie the behavioral shifts observed in fatigue.
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