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Study Motor Skill Learning by Single-pellet Reaching Tasks in Mice

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Identification of a Hippocampus-to-Zona Incerta Projection involved in Motor Learning.

Zhuo-Hang Zhang^1,2, Bo Wang¹, Yan Peng¹

¹The Molecular Biology Center, State Key Laboratory of Trauma, Burn and Combined Injury, Department of Army Occupational Disease, Daping Hospital, Army Medical University (Third Military Medical University), 10 Changjiang Zhilu, Chongqing, 400042, China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)

|July 3, 2024

Summary

Researchers discovered new brain pathways regulating motor learning (ML). Projections from the dorsal hippocampus to the zona incerta are crucial for ML acquisition, consolidation, and retrieval.

Keywords:

acquisition consolidation hippocampus motor learning projections retention/retrieval zona incerta

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Last Updated: Jun 22, 2025

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Immunohistochemical Visualization of Hippocampal Neuron Activity After Spatial Learning in a Mouse Model of Neurodevelopmental Disorders

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Published on: May 12, 2015

Area of Science:

Neuroscience
Motor Control
Learning and Memory

Background:

Motor learning (ML) is vital for development and rehabilitation.
Neural mechanisms underlying ML are not fully understood.
The dorsal hippocampus (dHPC) and zona incerta (ZI) are implicated in cognitive functions.

Purpose of the Study:

To identify novel neuronal projections regulating motor learning.
To elucidate the specific roles of dHPC-ZI pathways in different ML stages.

Main Methods:

Utilized recombinant adeno-associated virus for tracing neuronal projections.
Employed chemogenetics and optogenetics for targeted manipulation.
Investigated ML behaviors in a rodent model.

Main Results:

Identified previously unreported neuronal projections from the dHPC (dorsal DG and CA1) to the ZI.
Dorsal CA1 to ZI projections are critical for ML acquisition and consolidation.
Dorsal DG to ZI projections are essential for ML retrieval and retention.

Conclusions:

Revealed novel dHPC-ZI neural circuits involved in motor learning regulation.
Demonstrated distinct roles for dorsal DG and CA1 projections in ML stages.
Provided new insights into the temporal dynamics of ML neural control.