Classification of electrophysiological and morphological types in mouse visual cortex
Susan M. Sunkin,
Costas A. Anastassiou,
Tanya L. Daigle,
Rebecca A de Frates,
Thuc Nghi Nguyen,
Gabe J. Murphy,
Philip R Nicovich,
Michael J. Hawrylycz,
John W. Phillips,
Posted 17 Jul 2018
bioRxiv DOI: 10.1101/368456 (published DOI: 10.1038/s41593-019-0417-0)
Posted 17 Jul 2018
Understanding the diversity of cell types in the brain has been an enduring challenge and requires detailed characterization of individual neurons in multiple dimensions. To profile morpho-electric properties of mammalian neurons systematically, we established a single cell characterization pipeline using standardized patch clamp recordings in brain slices and biocytin-based neuronal reconstructions. We built a publicly-accessible online database, the Allen Cell Types Database, to display these data sets. Intrinsic physiological and morphological properties were measured from over 1,800 neurons from the adult laboratory mouse visual cortex. Quantitative features were used to classify neurons into distinct types using unsupervised methods. We establish a taxonomy of morphologically- and electrophysiologically-defined cell types for this region of cortex with 17 e-types and 35 m-types, as well as an initial correspondence with previously-defined transcriptomic cell types using the same transgenic mouse lines.
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