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. 2022 Feb 18;16:843025. doi: 10.3389/fncir.2022.843025

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Copyright © 2022 Qi and Feldmeyer.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Electro-morphological classification of L4 neurons in the rat barrel cortex. (A) Representative firing patterns of L4 regular spiking (RS, black) excitatory neurons, fast spiking (FS, red) and non-fast spiking (nFS, blue) interneurons. (B) Electrophysiological differentiation of L4 RS, FS and nFS neurons using the maximal firing frequency, AP half-width and the AHP amplitude. Mean and individual values are shown by large and small dots, respectively. (C) Box plots of three electrophysiological parameters for L4 RS, FS and nFS neurons. P value was calculated using the non-parametric Wilcoxon–Mann–Whitney two-sample rank test. *** p < 0.001, n.s. p ≥ 0.05. (D) Morphological sub-classification of L4 RS, FS and nFS neurons. Somata and dendrites, opaque colour; axons, half-transparent colour.