Figure 2.

Anatomical reconstruction and firing pattern of electrically coupled neurons. IR-DIC images, action potential firing patterns, and camera lucida-type reconstructions of biocytin-injected neurons are shown for all cell types. (a) Bipolar interneuron in layer 2/3 of P14 rat visual cortex. (b and c) Fusiform interneuron (b) and spiny stellate cell (c) in layer 4 of P14 rat somatosensory cortex. (d) Hippocampal dentate gyrus basket cell. In the reconstructions, the axon is red and the soma and dendrites are black. (The scale bar is 10 μm for all IR-DIC images, 100 μm for the reconstructions in a–c, and 50 μm for the reconstruction in d.)