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Related Experiment Video

Updated: May 14, 2026

Novel Object Recognition Test for the Investigation of Learning and Memory in Mice

Novel Object Recognition Test for the Investigation of Learning and Memory in Mice

Published on: August 30, 2017

Lateral entorhinal cortex is critical for novel object-context recognition.

David I G Wilson¹, Rosamund F Langston, Magdalene I Schlesiger

¹School of Psychology, University of St Andrews, St Mary's Quad, St Andrews, Fife, United Kingdom.

|February 8, 2013

Summary

The lateral entorhinal cortex (LEC) processes contextual details of events, crucial for episodic memory. Lesioning the LEC impairs recognition of object-context associations, highlighting its role in integrating environmental context with object identity.

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Last Updated: May 14, 2026

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Published on: August 30, 2017

Preparation of Parasagittal Slices for the Investigation of Dorsal-ventral Organization of the Rodent Medial Entorhinal Cortex

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Area of Science:

Neuroscience
Cognitive Science

Background:

Episodic memory integrates event details, including spatial and contextual information.
The brain's processing of spatial memory is well-understood, but the neural basis for contextual components remains less clear.
Rodent models using object-context recognition (OCR) tasks help investigate episodic memory formation.

Purpose of the Study:

To identify brain regions involved in processing nonspatial contextual features of episodic memory.
To determine the role of the lateral entorhinal cortex (LEC) in integrating object identity with environmental context.

Main Methods:

Measured c-fos expression in rat brains during an object-context recognition (OCR) task.
Created lesions in the lateral entorhinal cortex (LEC) of rats to assess the impact on memory recall.

Main Results:

Increased c-fos expression was observed in the LEC during the OCR task, indicating its activation.
Rats with LEC lesions exhibited deficits in recognizing object-context associations.
These rats maintained normal recognition for objects and contexts independently.

Conclusions:

The lateral entorhinal cortex (LEC) is critical for integrating contextual features with object identity.
Recognition of object-context associations, a key aspect of episodic memory, requires functional LEC.
LEC plays a vital role in forming episodic memories by combining contextual and object information before hippocampal processing.