Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Long-term environmental unpredictability increases social information use in zebrafish.

Behavioral ecology : official journal of the International Society for Behavioral Ecology·2026

Same author

The social origins of consciousness.

Philosophical transactions of the Royal Society of London. Series B, Biological sciences·2025

Same author

Mechanisms of social behaviour in the anti-social blind cavefish (<i>Astyanax mexicanus</i>).

Proceedings. Biological sciences·2025

Same author

Environmental Enrichment Increases Brain Volume in Snakes.

The Journal of comparative neurology·2025

Same author

Brain volume and microglial density changes are correlated in a juvenile mouse model of cranial radiation and CSF1R inhibitor treatment.

NMR in biomedicine·2024

Same author

Olfactory self-recognition in two species of snake.

Proceedings. Biological sciences·2024

Search research articles

Related Experiment Video

Updated: Sep 7, 2025

The Double-H Maze: A Robust Behavioral Test for Learning and Memory in Rodents

The Double-H Maze: A Robust Behavioral Test for Learning and Memory in Rodents

Published on: July 8, 2015

Behavioral evidence for two distinct memory systems in rats.

Noam Miller¹, Ramy Ayoub^2,3, Gehan Sentinathan^4,5

¹Department of Psychology, Wilfrid Laurier University, Waterloo, ON, Canada. nmiller@wlu.ca.

Animal Cognition

|June 22, 2022

Summary

This summary is machine-generated.

Rats exhibit incidental learning, similar to human implicit memory, in a serial reaction time task. Performance suggests rats possess at least two distinct memory systems, influenced by predictable sequences.

Keywords:

Explicit memory Implicit memory Process dissociation procedure (PDP)Rat SILT Serial reaction time task

More Related Videos

A Within-Subject Experimental Design using an Object Location Task in Rats

A Within-Subject Experimental Design using an Object Location Task in Rats

Published on: May 6, 2021

A Fully Automated and Highly Versatile System for Testing Multi-cognitive Functions and Recording Neuronal Activities in Rodents

A Fully Automated and Highly Versatile System for Testing Multi-cognitive Functions and Recording Neuronal Activities in Rodents

Published on: May 3, 2012

Related Experiment Videos

Last Updated: Sep 7, 2025

The Double-H Maze: A Robust Behavioral Test for Learning and Memory in Rodents

The Double-H Maze: A Robust Behavioral Test for Learning and Memory in Rodents

Published on: July 8, 2015

A Within-Subject Experimental Design using an Object Location Task in Rats

A Within-Subject Experimental Design using an Object Location Task in Rats

Published on: May 6, 2021

A Fully Automated and Highly Versatile System for Testing Multi-cognitive Functions and Recording Neuronal Activities in Rodents

A Fully Automated and Highly Versatile System for Testing Multi-cognitive Functions and Recording Neuronal Activities in Rodents

Published on: May 3, 2012

Area of Science:

Neuroscience
Animal Behavior
Cognitive Psychology

Background:

Serial reaction time tasks reveal implicit learning in humans.
Investigating animal cognition requires understanding their memory systems.
Rats are a common model organism for memory research.

Purpose of the Study:

To determine if rats exhibit implicit learning using a serial implicit learning task (SILT).
To investigate whether rats possess multiple memory systems analogous to humans.
To explore the impact of predictable sequences on rat memory performance.

Main Methods:

Rats performed a SILT involving nose-poking into sequential apertures (S1 and S2).
The proportion of predictable sequences (PS) was varied (10-80%) across experimental groups.
A Process Dissociation Procedure was used to analyze memory system involvement.

Main Results:

Rats with higher PS experience showed improved performance on predictable sequences.
Rats with more PS experience performed better on trials without a cued S2.
Increased PS experience led to greater perseveration on previously correct responses after sequence reversal.

Conclusions:

Rat performance suggests the presence of at least two distinct memory systems.
One memory system appears analogous to human implicit memory.
Varying the proportion of predictable sequences differentially activates these memory systems in rats.