Table 1. Intrinsic cell properties reveal that LR cells have a uniquely low rheobase, high input resistance, low input capacitance, and low spike frequency adaptation, as well as a spike width between that of FS and RS cells. Values are means ± SEM for each of the calculated intrinsic cell properties separated by cell group. Ns are reported individually for each property for each cell type. Details of the measurements are described in Materials and Methods. LR cells significantly differed from RS cells on the following measures: input resistance, input capacitance, spike width, spike frequency adaptation ratio, and rheobase (p<0.01) as well as latency to first spike (p<0.05). LR cells significantly differed from FS cells on the following measures: input resistance, input capacitance, membrane time constant, spike width, first spike latency, AHP amplitude, and rheobase (p<0.01), as well as spike frequency adaptation ratio (p<0.05). FS: Fast-spiking; RS: Regular-Spiking; LR: Low Rheobase.