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Related Experiment Video

Updated: Feb 21, 2026

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions

Published on: July 16, 2015

Directional hippocampal-prefrontal interactions during working memory.

Tiaotiao Liu¹, Wenwen Bai¹, Mi Xia¹

¹School of Biomedical Engineering and Technology, Tianjin Medical University, Tianjin, 300070, China.

Behavioural Brain Research

|October 9, 2017

Summary

This summary is machine-generated.

The ventral hippocampus (vHPC) leads the medial prefrontal cortex (mPFC) during working memory tasks. This vHPC-to-mPFC neural communication is crucial for successful task performance and decision-making.

Keywords:

Directional interaction Local field potential (LFP)Medial prefrontal cortex (mPFC)Rat Ventral hippocampus (vHPC)Working memory

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Area of Science:

Neuroscience
Cognitive Science

Background:

Working memory is vital for complex cognitive functions like reasoning and learning.
The hippocampus (HPC) and prefrontal cortex (PFC) are key brain regions involved in working memory.
Theta-band synchronization between HPC and PFC is critical for working memory, but directional influence remains unclear.

Purpose of the Study:

To investigate the directional interaction between the ventral hippocampus (vHPC) and medial prefrontal cortex (mPFC) during a working memory task.
To determine if vHPC or mPFC leads in neural communication during working memory execution.

Main Methods:

Simultaneous local field potential (LFP) recordings from rat vHPC and mPFC during a Y-maze working memory task.
Application of the instantaneous amplitudes cross-correlation method to calculate time lags between vHPC and mPFC signals.

Main Results:

A significant lead from the vHPC to the mPFC was observed.
This vHPC-leading interaction preceded correct choices made by the rats during the working memory task.

Conclusions:

The findings suggest a directional flow of information from the vHPC to the mPFC.
This vHPC-leading interaction plays a critical role in the successful execution of working memory.