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. 2010 Jan 18;20(10):2333–2347. doi: 10.1093/cercor/bhp310

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© The Authors 2010. Published by Oxford University Press.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.5), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 2. — Unsupervised cluster analysis applied to GFP-positive neocortical neurons. The x axis represents individual cells, and the y axis represents the average within-cluster linkage distance. Distances were calculated on the basis of the laminar location of the cells, in addition to 28 electrophysiological parameters (see Supplementary Methods S1). On the basis of the Thorndike threshold (dotted line), this analysis disclosed 2 groups of cells (corresponding to branches a and b): the NPY-cluster (black) and the VIP-cluster (gray). Histograms show the distribution of molecular markers within each cluster.