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. 2013 Oct 9;24(2):189–203. doi: 10.1002/hipo.22214

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Copyright © 2013 Wiley Periodicals, Inc. This is an open access article under the terms of the Creative Commons Attribution-NonCommercialNoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is noncommercial and no modifi-cations or adaptations are made.

This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Interneuron classes differ in properties related to single action potentials. (A) Representative traces of single action potentials recorded from interneurons representing classes P1-3. Upper traces represent the overshooting part of single spikes and lower traces the fast afterhyperpolarization (fAHP) of the same spike. In gray, two examples of single action potentials from class P3 are shown. The left one was obtained from a M2 (yellow, HICAP-like) and the right from a M3 (blue, TML-like) interneuron. (B) Superposition of single action potentials shown in A. Color code corresponds to class P1 (orange), class P2 (green) and class P3 (gray). (C) Bar graphs summarize the three active membrane properties related to single action potentials used in the cluster analysis shown in Figure 4A. Abbreviation: V_thres, threshold potential; amp, peak amplitude; HD, half-duration; FS, fast-spiking; STUT, stuttering; AC, accommodating (*, P < 0.05; **, P < 0.01; see also Supporting Information Table 6).