Results 241 to 250 of about 1,321,275 (276)
Some of the next articles are maybe not open access.
STRUCTURE-FUNCTION RELATIONSHIPS OF THE SINOATRIAL NODE
International Journal of Bifurcation and Chaos, 2003The sinoatrial node, the pacemaker of the heart, is a structurally and functionally complex and heterogeneous structure. Histology, immunohistochemistry, electrophysiology and mathematical modeling of the sinoatrial node are reviewed to reveal the structure-function relationships of the sinoatrial node. It is argued that contact between the sinoatrial
Halina Dobrzynski +4 more
openaire +2 more sources
Histamine and pacemaker shift in the sinoatrial node
Agents and Actions, 1994We used the isolated superfused preparations of right atrium with the zone of the sinoatrial node of rabbits to study the effects of histamine on the location of the dominant pacemaker. The preparations were cut into four pieces and electrical activity was recorded in each fragment by means of a surface suction electrode with internal KCl perfusion ...
E. Kevelaitis +2 more
openaire +3 more sources
Rhythmogenesis in the heart sinoatrial node
Biophysics, 2006The most significant experimental data on the formation of the common rhythm of the heart sinoatrial node are presented for both the intact heart sinoatrial node and cardiomyocytes in cell structures. The basic mathematical models for studying the synchronization processes in the sinoatrial node, including the Noble equation, Bonhoffer-van der Pol ...
openaire +2 more sources
Inward current of the rabbit sinoatrial node cell
Pfl�gers Archiv European Journal of Physiology, 1977Inward currents of the rabbit sinoatrial node cell were examined in voltage-clamp experiments using the two-microelectrode technique. A fast and slow inward current could be separated from each other. The slow inward current was blocked by Mn and D 600, but it was insensitive to TTX.
K Yanagihara +2 more
openaire +3 more sources
A gradient model of the rabbit sinoatrial node
Proceedings of the 25th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (IEEE Cat. No.03CH37439), 2004We have formulated a gradient model of the rabbit sinoatrial node based on cell-specific ionic models of electrical activity from its central and peripheral regions. The gradient model exhibits a smooth transition in action potential characteristics such as maximum diastolic potential, overshoot potential, upstroke velocity, action potential duration ...
Socrates Dokos +2 more
openaire +2 more sources
The Sinoatrial Node and Its Dysfunction
1987The purpose of this chapter is to review the function and dysfunction of the sinoatrial node (SAN). The majority of the chapter encompasses SAN dysfunction: surface electrocardiography; clinical manifestations; noninvasive evaluation; intracardiac electrophysiology and treatment.
openaire +2 more sources
Electrotonic spread in the sinoatrial node of the rabbit heart
Pfl�gers Archiv European Journal of Physiology, 1973Using a relatively large extracellular suction electrode (see previous paper for a detailed description of the method) a number of fibers of the sinoatrial node of the rabbit were simultaneously polarized. Although the geometry of the sinoatrial node is very complex and a three-dimensional spread of current is expected, it turned out that with this ...
openaire +3 more sources