Fig. 8

Morphological and intrinsic properties of pyramidal neurons in the ACC of tree shrew. a Averaged action potential numbers induced by step currents injection (400 ms, 10 pA per step) showed that the spike numbers of tree shrew neurons (n = 12 neurons/4 tree shrews) was larger than compared with mouse (n = 15 neurons/5 mice). b The percentage of three kinds of pyramidal neurons in tree shrew: regular spike (RS), intermediate (IM) and intrinsic bursting (IB) neurons (n = 65 neurons/22 tree shrews; n = 60 neurons/17 mice). c-e Electrophysiological and morphological properties of three kinds of pyramidal neurons in the ACC of tree shrew. A single current-clamp trace for the first spike induced by a series of intracellular current pulses (400 ms, 5 pA per step) (a). The blue frame in image (a) was enlarged in image (b). Superimposed current-clamp traces evoked by the current injections of −50, 0, +50 pA (c). Representative biocytin labeled profiles of recording pyramidal neurons as visualized with confocal laser scanning microscopy (d), scale bar: 50 μm