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Updated: Jun 11, 2026

Single Synapse Indicators of Glutamate Release and Uptake in Acute Brain Slices from Normal and Huntington Mice

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Human Neocortical Glutamatergic Neurons Revealed Through Multimodal Profiling.

Rachel Dalley, Sarah Walling-Bell, Jeremy A Miller

Biorxiv : the Preprint Server for Biology

|January 16, 2026

Summary

This study integrates morphology, electrophysiology, and transcriptomics (Patch-seq) to map human neocortical neuron types. Findings reveal how morphoelectric features define neuronal computations and vary across cortical layers and species.

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Area of Science:

Neuroscience
Cell Biology
Genomics

Background:

Human neocortical neuron diversity is poorly understood due to limited tissue access and data modalities.
Transcriptomic data alone is insufficient to define neuronal computational properties.

Purpose of the Study:

To comprehensively characterize human neocortical excitatory neuron types using a multimodal approach.
To integrate morphoelectric features with transcriptomic identity for a deeper understanding of neuronal function.

Main Methods:

Patch-seq was employed to collect morphology, electrophysiology, and transcriptomic data from single neurons.
Spatial transcriptomic data was integrated to provide a layer-centric perspective.
39 out of 42 transcriptomically-defined neuron types were analyzed.

Main Results:

Morphoelectric properties, including cortical depth, dendritic structure, and excitability, effectively distinguish transcriptomic subclasses and finer types.
Neuronal properties show spatial variation, with supragranular layers influenced by location and deeper layers exhibiting more heterogeneity.
Cross-species comparisons revealed conserved subclass organization but distinct dendritic arborization patterns between humans and mice, with similarities between humans and macaques.

Conclusions:

This multimodal dataset provides a unified reference for human cortical circuitry.
The findings advance the understanding of neuronal computations and cortical organization.
Establishes a foundation for future studies on human brain function and neurological diseases.