We combined whole-cell recordings with Neurobiotin labeling to examine the electrophysiological and morphological properties of neurons from the ventral subicular complex in vitro (including the subicular, presubicular, and parasubicular areas). No a priori morphological sampling criteria were used to select cells. Cells were classified as bursting (IB), regular-spiking (RS), and fast-spiking (...

Calcium-dependent plateau potentials in rostral ambiguus neurons in the newborn mouse brain stem in vitro. J. Neurophysiol. 78: 2483-2492, 1997. The nucleus ambiguus contains vagal and glossopharyngeal motoneurons and preganglionic neurons involved in respiration, swallowing, vocalization, and control of heart beat. Here we show that the rostral compact formation's ambiguus neurons, which contr...

The horizontal optokinetic nystagmus (hOKN) in primates is immature at birth. To elucidate the early functional state of the visual pathway for hOKN, retinal slip neurons were recorded in the nucleus of the optic tract and dorsal terminal nucleus (NOT-DTN) of 4 anesthetized infant macaques. These neurons were direction selective for ipsiversive stimulus movement shortly after birth [postnatal d...

At the crayfish opener neuromuscular junction, axons branch repeatedly before synapsing onto muscle fibers as varicosities. Excitability of these axons was examined with two-electrode current clamp before and after partial block of Na(+) channels with 1 nM tetrodotoxin. 4-Aminopyridine (200 μM) was added to homogenize nonuniformity in K(+) channel density. The impact of tetrodotoxin was evaluat...

Paroxysmal supraventricular tachycardias with narrow QRS are defined as rhythms originating from above the His bundle, heart rate higher 100 bpm and QRS complex of less than 120 ms in adults or less than 90 ms in children. They present a prevalence of up to 8/1000 individuals. The main presentations of these regular tachycardias are atrioventricular nodal re-entrant tachycardia and orthodromic ...

Abstract Funding Acknowledgements Type of funding sources: None. Backgrounds Catheter ablation for paroxysmal supraventricular tachycardia (PSVT) is curative treatment. However, diagnosis atrial (AT) distinguishing from other PSVTs are often challenging, especially when the terminates after pacing or does not sustain long enough diagnostic maneuvers. We sought a new method AT. Methods One-hundr...

Abstract Introduction and purpose We sought to described a new protocol of open window mapping (OW) utilizing high-density in accessory pathways (AP) CARTO® 3 system. This automatically map conventional electrophysiology criteria for AP location, as shorter local EGM AV interval (extended early meets late tool), earliest activation time (LAT)and annotation at unipolar signal (wavefront annotati...