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Updated: Nov 28, 2025

Evaluation of Hemisphere Lateralization with Bilateral Local Field Potential Recording in Secondary Motor Cortex of Mice

Evaluation of Hemisphere Lateralization with Bilateral Local Field Potential Recording in Secondary Motor Cortex of Mice

Published on: July 31, 2019

Cerebellar Cortex 4-12 Hz Oscillations and Unit Phase Relation in the Awake Rat.

Maxime Lévesque¹, HongYing Gao², Carla Southward³

¹Department of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, Montréal, QC, Canada.

Frontiers in Systems Neuroscience

|November 26, 2020

Summary

Cerebellar cortex oscillations influence neuronal firing patterns during rest. These brain rhythms, particularly in the granule cell layer, impact Golgi and Purkinje cell activity, potentially shaping neural networks.

Keywords:

cerebellum network oscillation phase-locking rhythmicity

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Area of Science:

Neuroscience
Cerebellar Physiology
Computational Neuroscience

Background:

Local field potential (LFP) oscillations in the cerebellar granule cell layer (GCL) are linked to behavior and cerebral cortex communication.
These 4-12 Hz oscillations during rodent awake immobility may reflect underlying influences on cerebellar neuronal firing patterns at rest.

Purpose of the Study:

To investigate the relationship between GCL LFP oscillations and single-neuron activity in the cerebellar cortex during awake rest.
To determine the extent to which GCL oscillations influence the firing patterns of Golgi cells and Purkinje cells.

Main Methods:

Simultaneous recording of cerebellar cortex LFPs and single-unit activity in awake, resting rats.
Analysis of neuronal firing patterns during identified LFP oscillatory periods within the GCL.

Main Results:

A significant proportion of Golgi cells (74%) and Purkinje cell simple spikes (54%) were phase-locked to GCL LFP oscillations.
Golgi cells and Purkinje cell simple spikes exhibited phase-locked firing predominantly at the peak of the LFP cycle.
GCL LFP oscillations strongly predicted Golgi cell spiking timing, indicating a substantial influence on GCL neuronal activity.

Conclusions:

Synaptic activity underlying GCL LFP oscillations significantly influences cerebellar neuronal population firing patterns in the awake resting state.
These oscillations may play a preparatory role, establishing a neural baseline for subsequent cerebellar processing and operations.
The influence of GCL oscillations is more pronounced on Golgi cells than on Purkinje cell simple spike firing.