In Vivo Cerebellar Nuclei Neuron Electrophysiology in Mice

144 cerebellar nuclei neurons from adult ketamine-xylazine anesthetized mice were recorded in vivo, with properties including membrane resistance, capacitance, spike half-width, and firing frequency. The dataset contains measurements from 88 regularly firing and 56 spontaneously bursting neurons, collected by Cathrin B. Canto and published in 2020. It provides a continuum of physiological properties for computational modeling of cerebellar motor learning.

Use Cases

• Model the continuum of membrane resistance (9.63 to 3352.1 MΩ) and capacitance (6.7 to 772.57 pF) values to simulate neuronal population diversity.
• Analyze correlations between firing frequency (0 to 176.6 Hz) and capacitance for insights into neuronal excitability.
• Use spike half-width (0.178 to 1.98 ms) and membrane resistance data to classify larger versus smaller neurons based on morphological criteria from intracellular Neurobiotin labelling.
• Train clustering algorithms on intrinsic firing properties to test for identifiable neuron subtypes, as attempted with k-clustering in the original study.
• Incorporate the measured membrane time constant and rebound spiking intensity parameters into biophysical models of cerebellar nuclei function.

Strengths

• Contains in vivo whole-cell recordings from 144 identified cerebellar nuclei neurons, a specific neuronal population.
• Reports a wide range of quantified electrophysiological parameters, including membrane resistance varying over three orders of magnitude.
• Includes data from 18 neurons with intracellular Neurobiotin labelling, allowing correlation of electrophysiology with morphology.

Limitations

• Data is from anesthetized animals (ketamine-xylazine), which may alter neuronal properties compared to awake states.
• Sample size of morphologically characterized neurons (N=18) is small relative to the full electrophysiological dataset.
• The study explicitly states neuron subtypes could not be identified using clustering of intrinsic properties alone, indicating complexity or lack of clear classes.

Provenance

Source

Dryad, authored by Cathrin B. Canto.

Collection Method

In vivo whole-cell patch-clamp electrophysiology in anesthetized adult mice, with intracellular labelling using Neurobiotin for a subset of neurons.

Freshness

2020-06-24

Geography

Laboratory study; specific location not stated.