The burst firing in the layer III and V pyramidal neurons of the cat sensorimotor cortex in vitro

We identified the burst and single-spiking cells, and the repetitive bursting cells in layers III and V of the cat sensorimotor cortex with intracellular recording and staining techniques. Both types of the bursting cells were found in 22.7% of the recorded layer V neurons and in 23.1% of the recorded neurons in layer III. The bursting cells were characterized by the prominent afterdepolarization (ADP) which was usually reaching the threshold depolarization. Intracellular staining revealed that the morphology of the bursting cells was not so different from that of the regular-spiking cells in the cat.