110. Haberly LB. (1997) Olfactory cortex Synaptic Organization Of The Brain, Shepherd GM, ed. .

NeuronCompartmentPropertyConnectivityNotes
Olfactory cortex anterior pyramidal neuronSomaI A.Steady-state inactivation curve is 10 mV more depolarized in SP cells in endopiriform nucleus. "Modelling analysis suggested that this difference is sufficient to explain the more depolarized membrane potential of deep cells, and results in a 2-fold decrease in latancy of the first spike evoked by depolarizing steps" (Banks MI et al, 1996 [rat ]111 ). These factors may contribute to greater susceptibility of endopiriforn nucleus to epileptogenesis. Reviewed in Haberly LB, 1997110 p397.
Olfactory cortex anterior pyramidal neuronSomaI L high threshold.Reviewed in Haberly LB, 1997110 p396.
Olfactory cortex anterior pyramidal neuronSomaI T low threshold.Reviewed in Haberly LB, 1997110 p396.
Olfactory cortex anterior pyramidal neuronSomaI Na,p.May generate long delays contributing to temporal patterns (Ketchum and Haberly 1991); may play a role in epileptogenesis (Hoffman WH and Haberly LB, 1989 [rat ]82 ). Reviewed in Haberly LB, 1997110 p396 (Tseng and Haberly LB, 1989 [mammal ]48 ).
Olfactory cortex anterior pyramidal neuronSomaI K,Ca.Substantial in most deep pyramidal and multipolar cells; generates hyperpolarizing potentials lasting several seconds; as I AHP contributes to rapid spike frequency adaptation; blocked by cholinergic agonists (Constanti A and Sim JA, 1987 [guinea-pig ]85 ; see also Tseng and Haberly 1989b; reviewed in Haberly LB, 1997110 p397).
Olfactory cortex anterior pyramidal neuronSomaI M.Tonically active at rest; induces a sag in hyperpolarizing responses; blocked by ACh. (Constanti A and Galvan M, 1983 [guinea pig ]46 ; See also Tseng and Haberly 1989b; reviewed in Haberly LB, 1997110 p395).
Olfactory cortex anterior pyramidal neuronSomaI h.(Constanti A and Galvan M, 1983 [guinea pig ]47 ). This current "may be of limited significance within the normal physiological range of potential and extracellular environment" (Haberly LB, 1997110 p396).
Olfactory cortex anterior pyramidal neuronDistal apical dendriteGabaB.GABA is the transmitter released from large superficial horizontal cells and small globular-soma cells which mediate feed-forward inhibition of the pyramidal neurons when activated by axon terminals of mitral/tufted cells in the lateral olfactory tract or association fibers from other pyramidal neurons (Haberly LB, 1997110 pp385,389,393-395,407).

References
111. Banks MI, Haberly LB and Jackson MB. (1996) Layer-specific properties of the transient K current (IA) in piriform cortex. J Neurosci 16:3862-76.
110. Haberly LB. (1997) Olfactory cortex Synaptic Organization Of The Brain, Shepherd GM, ed. .
82. Hoffman WH and Haberly LB. (1989) Bursting induces persistent all-or-none EPSPs by an NMDA-dependent process in piriform cortex. J Neurosci 9:206-15.
48. Tseng and Haberly LB. (1989) .
85. Constanti A and Sim JA. (1987) Muscarinic receptors mediating suppression of the M-current in guinea-pig olfactory cortex neurones may be of the M2-subtype. Br J Pharmacol 90:3-5.
46. Constanti A and Galvan M. (1983) M-current in voltage-clamped olfactory cortex neurones. Neurosci Lett 39:65-70.
47. Constanti A and Galvan M. (1983) Fast inward-rectifying current accounts for anomalous rectification in olfactory cortex neurones. J Physiol 335:153-78.
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