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Updated: Jul 2, 2026

The 5-Choice Serial Reaction Time Task: A Task of Attention and Impulse Control for Rodents
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Transient strain differences in an operant delayed non-match to position task.

Taqdees Gohar1, Evan J Ciacciarelli2, Scott D Dunn2

  • 1MARC Program, Rutgers University-Camden, Camden, NJ 08102, USA; Cell Biology and Neuroscience, USA.

Behavioural Processes
|August 21, 2023
PubMed
Summary

Fischer 344 rats initially showed better working memory than Long-Evans rats. Both strains improved, but Fischer 344 performance remained stable, impacting behavioral neuroscience research.

Keywords:
Delayed non-match to positionFischer 344Long-EvansWorking memory

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Area of Science:

  • Neuroscience
  • Behavioral Science
  • Cognitive Psychology

Background:

  • Working memory is crucial for cognitive tasks.
  • Impaired working memory is characteristic of disorders like schizophrenia and Alzheimer's disease.
  • Understanding strain differences in working memory is vital for translational research.

Purpose of the Study:

  • To investigate working memory differences between Fischer 344 and Long-Evans rat strains.
  • To examine potential sex differences in working memory performance.
  • To establish baseline behavioral data for future transgenic rat model studies.

Main Methods:

  • Utilized the delayed non-match to position (DNMTP) operant task.
  • Assessed working memory performance across multiple training sessions.
  • Compared performance metrics between Fischer 344 and Long-Evans rats.

Main Results:

  • Fischer 344 rats demonstrated superior performance early in training compared to Long-Evans rats.
  • Fischer 344 rats exhibited stable working memory performance across sessions.
  • Long-Evans rats showed performance improvements in later training sessions.

Conclusions:

  • Rat strain significantly influences working memory performance in the DNMTP task.
  • Acknowledging strain-specific learning trajectories is essential for interpreting behavioral data.
  • These findings aid in selecting appropriate rat models for studying cognitive deficits.