Electrophysiological properties of rat subicular neurons in vitro.
The electrophysiological properties of 46 bursting cells and 39 regular firing cells were studied in the subiculum of rat combined hippocampal-entorhinal cortex slices. In bursting cells we found a significantly higher resting membrane potential than in regular firing cells. Upon hyperpolarization both cell types expressed a delayed inward rectification with a subsequent afterdepolarization. While in regular firing cells longer lasting depolarizing current injection caused a train of action potentials with a rather marked decline of discharge frequency, bursting cells displayed only little frequency accommodation. Regular firing cells usually displayed a fast and a slow afterhyperpolarization following a train of action potentials, while bursting neurons present only a slow afterhyperpolarization.
Behr
J
J
Institute of Physiology at the Charité, Department of Neurophysiology,Humboldt University Berlin, Germany. behr@comcom.rz.charite.hu-berlin.de
Empson
R M
RM
Schmitz
D
D
Gloveli
T
T
Heinemann
U
U
D000818:Animals; D006624:Hippocampus / Q000502:physiology*; D008564:Membrane Potentials / Q000502:physiology*; D009474:Neurons / Q000502:physiology; D051381:Rats; D017208:Rats, Wistar