Related Experiment Video
Updated: Feb 7, 2026
08:49
Visualization of Cortical Modules in Flattened Mammalian Cortices
Published on: January 22, 2018
13.8K
Divergent Solutions to Visual Problem Solving across Mammalian Species.
Faiz Mustafar1,2, Michael A Harvey1, Abbas Khani3
1Visual Cognition Laboratory, Department of Medicine, University of Fribourg, Fribourg 1700, Switzerland.
Eneuro
|August 4, 2018
Summary
Rats exhibit distinct decision-making behaviors compared to humans, monkeys, and tree shrews, relying more on reward history than visual cues. This highlights limitations of using rodents as models for visually based research.
Area of Science:
- Neuroscience
- Comparative Cognition
- Animal Behavior
Background:
- Understanding brain function relies on animal models, but cross-species behavioral and neural circuit homology is often assumed.
- The increasing reliance on murine models for neuroscience research necessitates evaluating their suitability for specific tasks.
Purpose of the Study:
- To compare behavioral strategies and decision-making processes across species (humans, rats, monkeys, tree shrews) on a visual discrimination task.
- To investigate the degree of homologous neural circuitry engagement during learning and behavior across species.
Main Methods:
- A three-alternative, forced-choice visual contrast discrimination task was administered to humans, rats, monkeys, and tree shrews.
- Behavioral data, including learning rates, peak performance, and choice strategies, were analyzed.
Main Results:
- Rats demonstrated lower learning rates, peak performance, and poorer transfer across contrasts compared to other species.
- Rats primarily used past reward history, unlike monkeys and tree shrews who relied on visual information.
- Under difficult conditions, rats disengaged from visual stimuli, reverting to spatial predispositions.
Conclusions:
- Rodents may not be ideal models for translational research in visually based decision-making due to significant behavioral differences.
- Comparative studies are crucial for validating animal models and understanding species-specific cognitive processes.
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