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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: Apr 4, 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

Does the hippocampus keep track of time?

D J Palombo^1,2, M M Keane^1,2,3, M Verfaellie^1,2

¹Memory Disorders Research Center, VA Boston Healthcare System, Boston, Massachusetts.

|September 8, 2015

Summary

The medial temporal lobe (MTL), particularly the hippocampus, is crucial for estimating long durations but not short ones. This suggests distinct brain mechanisms support time perception at different scales.

Keywords:

amnesia lesion medial temporal lobes prospective time estimation

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Last Updated: Apr 4, 2026

Recording Spatially Restricted Oscillations in the Hippocampus of Behaving Mice

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Published on: July 1, 2018

Tuning in the Hippocampal Theta Band In Vitro: Methodologies for Recording from the Isolated Rodent Septohippocampal Circuit

Tuning in the Hippocampal Theta Band In Vitro: Methodologies for Recording from the Isolated Rodent Septohippocampal Circuit

Published on: August 2, 2017

Simultaneous Monitoring of Wireless Electrophysiology and Memory Behavioral Test as a Tool to Study Hippocampal Neurogenesis

Simultaneous Monitoring of Wireless Electrophysiology and Memory Behavioral Test as a Tool to Study Hippocampal Neurogenesis

Published on: August 20, 2020

Area of Science:

Neuroscience
Cognitive Psychology
Behavioral Neuroscience

Background:

The medial temporal lobe (MTL) is implicated in memory and spatial navigation.
Prospective time estimation, the ability to judge duration, is essential for daily functioning.
The neural basis of time estimation across different timescales remains incompletely understood.

Purpose of the Study:

To investigate the role of the medial temporal lobe (MTL) in prospective time estimation at short and long intervals.
To determine if hippocampal function is specifically required for temporal estimation at longer durations.

Main Methods:

A novel behavioral paradigm adapted from rodent studies was employed.
Amnesic patients with MTL damage and healthy controls estimated durations of nature video clips (short ≤ 90s; long > 4min).

Main Results:

Amnesic patients showed impaired time estimation for long durations (> 4 min) but not short durations (≤ 90s).
This deficit was present in patients with hippocampal lesions, indicating specificity.
These findings were consistent with previous rodent research.

Conclusions:

The MTL, and specifically the hippocampus, plays a critical role in prospective time estimation, particularly at longer timescales.
The findings suggest that distinct neurobiological mechanisms underlie time perception at short versus long intervals.
This research highlights the differential involvement of brain structures in temporal processing.