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Updated: Jun 23, 2026
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Using Optical Coherence Tomography and Optokinetic Response As Structural and Functional Visual System Readouts in Mice and Rats
Published on: January 10, 2019
A rodent model for the study of invariant visual object recognition
Davide Zoccolan1, Nadja Oertelt, James J DiCarlo
1The Rowland Institute at Harvard, Harvard University, Cambridge, MA 02142, USA.
Summary
Rats demonstrate advanced visual object recognition, successfully identifying objects despite changes in size, view, and lighting. This finding suggests rodents are viable models for studying complex visual processing.
Area of Science:
- Neuroscience
- Cognitive Science
- Vision Science
Background:
- Human object recognition is invariant to changes in viewing conditions, a capability poorly understood computationally.
- Nonhuman primates are traditional models for invariant recognition, while rodents are often overlooked due to assumptions about their visual processing limitations.
Purpose of the Study:
- To investigate the object recognition capabilities of rodents under varying visual conditions.
- To determine if rats exhibit invariant object recognition, challenging traditional assumptions about rodent visual processing.
Main Methods:
- Pigmented rats were trained on a visual task requiring object recognition across variations in size, view, and lighting.
- The study assessed rats' ability to generalize recognition to novel transformations of learned objects.
Main Results:
- Rats successfully recognized objects despite significant variations in size, view, and lighting.
- Rats demonstrated spontaneous generalization to previously unseen transformations of learned objects, indicating robust invariant recognition.
Conclusions:
- Rats possess a higher level of visual processing ability than previously appreciated.
- These findings provide the first systematic evidence for invariant object recognition in rats.
- Rodents should be considered more seriously as models for high-level visual processing research.
