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Role of Hippocampus in Memory

Role of Hippocampus in Memory

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: Mar 31, 2026

Recording Spatially Restricted Oscillations in the Hippocampus of Behaving Mice

Recording Spatially Restricted Oscillations in the Hippocampus of Behaving Mice

Published on: July 1, 2018

Default Distance Coding Properties in the Hippocampus.

Sam McKenzie¹, György Buzsáki¹

¹The Neuroscience Institute, School of Medicine and Center for Neural Science, New York University, New York, NY 10016, USA.

|October 24, 2015

Summary

This summary is machine-generated.

Neurons in the hippocampus, crucial for memory, can form intrinsic temporal sequences even without changing sensory input. This challenges the idea that external stimuli solely drive hippocampal activity patterns.

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Last Updated: Mar 31, 2026

Recording Spatially Restricted Oscillations in the Hippocampus of Behaving Mice

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Published on: July 1, 2018

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Published on: October 6, 2017

Area of Science:

Neuroscience
Cognitive Neuroscience
Hippocampal Function

Background:

The hippocampus is traditionally viewed as processing sensory information through precise conjunctions of inputs.
Understanding the intrinsic dynamics of hippocampal neurons is key to deciphering memory formation and retrieval.

Purpose of the Study:

To investigate the intrinsic spatiotemporal organization of hippocampal neurons.
To determine if hippocampal neuronal activity can exhibit sequential properties independent of dynamic sensory input.

Main Methods:

In vivo imaging of neuronal activity in the hippocampus.
Analysis of neuronal firing patterns in a static sensory environment.

Main Results:

Neurons in the hippocampus spontaneously organized into distinct spatiotemporal sequences.
These sequences possessed intrinsic temporal properties, independent of external sensory changes.

Conclusions:

Hippocampal neuronal networks exhibit intrinsic dynamics that can generate sequential activity.
This intrinsic organization challenges traditional models and suggests a more complex role for the hippocampus in neural processing.