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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: Nov 16, 2025

Investigating Long-term Synaptic Plasticity in Interlamellar Hippocampus CA1 by Electrophysiological Field Recording

Investigating Long-term Synaptic Plasticity in Interlamellar Hippocampus CA1 by Electrophysiological Field Recording

Published on: August 11, 2019

Sex differences in hippocampal connectivity during spatial long-term memory.

Dylan S Spets¹, Haley A Fritch¹, Scott D Slotnick¹

¹Department of Psychology and Neuroscience, Boston College, Chestnut Hill, Massachusetts, USA.

|February 26, 2021

Summary

This summary is machine-generated.

Male and female brains show distinct functional connectivity patterns during spatial long-term memory tasks. These sex differences in brain networks suggest that sex should be considered in cognitive neuroscience research.

Keywords:

fMRI functional connectivity gPPI hippocampus spatial memory

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Sex Differences in Mouse Hippocampal Astrocytes after In-Vitro Ischemia

Sex Differences in Mouse Hippocampal Astrocytes after In-Vitro Ischemia

Published on: October 25, 2016

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Last Updated: Nov 16, 2025

Investigating Long-term Synaptic Plasticity in Interlamellar Hippocampus CA1 by Electrophysiological Field Recording

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Published on: August 11, 2019

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Sex Differences in Mouse Hippocampal Astrocytes after In-Vitro Ischemia

Sex Differences in Mouse Hippocampal Astrocytes after In-Vitro Ischemia

Published on: October 25, 2016

Area of Science:

Neuroscience
Cognitive Neuroscience
Neuroimaging

Background:

Sex differences in brain activity are documented for various long-term memory types.
Functional connectivity during long-term memory has not been extensively studied regarding sex differences.
Prior research indicates males exhibit greater intrahemispheric connectivity, while females show greater interhemispheric connectivity.

Purpose of the Study:

To identify brain regions functionally connected to the hippocampus during spatial long-term memory.
To investigate potential sex differences in these hippocampal functional connectivity patterns.

Main Methods:

Participants performed a spatial long-term memory task involving abstract shapes.
A hippocampal region of interest (ROI) was identified using functional magnetic resonance imaging (fMRI) by contrasting memory hits and misses.
Seed-based functional connectivity analysis was performed using the hippocampal ROI to identify connected brain regions.

Main Results:

Functional connectivity to the hippocampus included medial posterior frontal cortex, lateral posterior frontal cortex, inferior frontal gyrus, posterior cingulate cortex, and caudate/putamen.
Males exhibited greater functional connectivity than females in the medial posterior frontal cortex, anterior prefrontal cortex, precuneus, and cingulate sulcus.
Females demonstrated greater interhemispheric connectivity compared to males.

Conclusions:

Significant sex differences exist in functional brain networks supporting spatial long-term memory.
The findings highlight distinct patterns of hippocampal connectivity between males and females.
Researchers should consider sex as a biological variable in cognitive neuroscience studies, as collapsing across sex may obscure important findings.