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Long-Term Memory

Long-Term Memory

Long-term memory is a relatively permanent type of memory, capable of storing vast amounts of information over extended periods. Its storage capacity is generally considered unlimited.
Long-term memory can be categorized into two primary types: explicit and implicit memory. Explicit memory, also known as declarative memory, involves the conscious recollection of information that we deliberately try to remember, recall, and articulate. This type of memory encompasses specific facts, events, and...

Storage

Storage

A schema is a mental framework that helps individuals organize and interpret information. Schemata, formed from previous experiences, influence how we process new information: how we encode it, the inferences we make, and how we retrieve it. For instance, a schema for what a typical classroom looks like might include desks, a teacher's desk, a whiteboard, and students in such an environment. This expectation helps us quickly understand and navigate new classrooms without needing to analyze...

Role of Hippocampus in Memory

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The hippocampus, a critical brain structure, plays an essential role in memory processing, particularly in the formation and retrieval of memory. This small, seahorse-shaped region is located within the medial temporal lobe, with one hippocampus in each brain hemisphere. Experimental studies involving lesions in the hippocampi of rats have demonstrated significant impairments in tasks such as object recognition and maze navigation, indicating the hippocampus involvement in both recognition and...

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Related Experiment Video

Updated: Feb 17, 2026

The Spatial Memory Game: Testing the Relationship Between Spatial Language, Object Knowledge, and Spatial Cognition

The Spatial Memory Game: Testing the Relationship Between Spatial Language, Object Knowledge, and Spatial Cognition

Published on: February 19, 2018

Long-term spatial clustering in free recall.

Daniel Pacheco¹, Paul F M J Verschure^1,2,3

¹a Laboratory of Synthetic Perceptive, Emotive and Cognitive Systems, Center of Autonomous Systems and Neurorobotics , Universitat Pompeu Fabra , Barcelona , Spain.

Memory (Hove, England)

|November 30, 2017

Summary

This summary is machine-generated.

Spatial memory organization influences long-term recall. Participants recalled items from nearby locations together, showing spatial clustering enhances memory performance even after 24 hours.

Keywords:

Free recall spatial clustering spatial memory spatial navigation virtual reality

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Area of Science:

Cognitive Psychology
Neuroscience
Human Memory Research

Background:

Long-term memory organization is crucial for recall.
Spatial memory plays a role in how information is retained.
Previous studies focused on immediate or short-term recall effects.

Purpose of the Study:

To investigate the influence of spatial memory on long-term item organization.
To examine the relationship between spatial clustering and recall performance over 24 hours.
To determine if navigation type affects spatial clustering in memory.

Main Methods:

Two experiments involving virtual environment exploration and item memorization.
Immediate and 24-hour delayed free recall tests.
Analysis of recall order and correlation with item locations.

Main Results:

A significant tendency to recall items from proximate locations consecutively.
Positive correlation between spatial organization degree and total items recalled.
Spatial clustering of recalled items was independent of active versus passive navigation.

Conclusions:

Spatial clustering is a stable feature of long-term memory organization.
Spatial organization significantly correlates with recall performance over extended periods.
Navigation method does not impact the spatial clustering effect in memory recall.