Model neocortical pyramidal neurons were investigated to evaluate the impact of correlated synaptic bombardment on cellular responsiveness. The responses to simulated glutamatergic (AMPA-mediated) excitatory inputs were analyzed by comparing correlated and uncorrelated background activity. Pyramidal cells behaved stochastically, consistent with the high variability of responses typically observ...

Intracellular and field potential recordings were taken from the lateral nucleus of the amygdala in a rat horizontal brain slice preparation that included hippocampal formation. Pyramidal cells comprised the majority of labeled cells (77%). Electrophysiological classification based on hyperpolarizing or depolarizing afterpotentials subdivided both the pyramidal and non-pyramidal cell classes, a...