Fig. A6.

Expanded analysis of correlations among electrophysiological properties. A: Benjamini-Hochberg adjusted P values for pairwise electrophysiological property correlation matrix shown in Fig. 4. B and C: coefficients corresponding to the first (B) and second (C) probabilistic principal component (pPC). D: projection of neuron types onto space defined by first and second pPCs. Note that the first pPC qualitatively reflects the axis of electrotonically small (left) vs. large (right) neuron types, while the second pPC qualitatively reflects the axis of basal excitability of neuron types, separating hyperpolarized (bottom) from depolarized (top) resting membrane potentials.