Related Experiment Video
Updated: Jan 9, 2026
08:52
Novel Object Recognition Test for the Investigation of Learning and Memory in Mice
Published on: August 30, 2017
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Retrosplenial cortex 5-HT2A receptors critically contribute to recognition memory processing.
Beatriz Agustina Ortega1,2, Noelia V Weisstaub2,3, Cynthia Katche1,2
1Laboratorio de Memoria, Instituto de Biología Celular y Neurociencia "Prof. E. DeRobertis" (IBCN), Facultad de Medicina, CONICET-UBA, Buenos Aires, Argentina.
Frontiers in Cellular Neuroscience
|December 4, 2025
Summary
Serotonin 5-HT2A receptors in the anterior retrosplenial cortex are crucial for object recognition memory. Blocking these receptors impaired memory formation and recall in rats, suggesting a role in cognitive function.
Area of Science:
- Neuroscience
- Cognitive Science
Background:
- The anterior retrosplenial cortex (aRSC) integrates sensory information for memory.
- Serotonergic pathways, particularly involving 5-HT2A receptors (5-HT2ARs), are present in the aRSC.
- The precise role of aRSC 5-HT2ARs in recognition memory is unclear.
Purpose of the Study:
- To investigate the role of 5-HT2ARs within the aRSC in object recognition (OR) memory.
- To determine if 5-HT2ARs modulate different phases of memory processing (acquisition, consolidation, retrieval).
Main Methods:
- Selective blockade of 5-HT2ARs in the aRSC of rats.
- Utilized the object recognition (OR) task to assess memory performance.
- Analyzed the effects of receptor blockade on memory acquisition, consolidation, and retrieval phases.
Main Results:
- Selective blockade of aRSC 5-HT2ARs significantly impaired OR memory.
- The blockade differentially affected memory acquisition, consolidation, and retrieval.
- This highlights a critical role for these receptors in specific memory processes.
Conclusions:
- 5-HT2ARs in the anterior retrosplenial cortex are essential modulators of recognition memory.
- Dysregulation of aRSC 5-HT2ARs may contribute to cognitive deficits in neurological disorders.
- Targeting these receptors could offer therapeutic potential for memory impairments.
Keywords:
memory consolidationmemory retrievalrecognition memoryretrosplenial cortexserotonin receptor 2AMore Related Videos
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