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action potential
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action potential The change in electrical potential that occurs across a cell membrane during the passage of a nerve impulse. As an impulse travels in a wavelike manner along the axon of a nerve, it causes a localized and transien...
Related newspaper, magazine, and journal articles from HighBeam Research
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Can shocks timed to action potentials in low-gradient regions improve both internal and out-of-hospital defibrillation?
Journal of Electrocardiology
; ... As fibrillation duration increases, action potential frequency decreases and periods of ... shock synchronization, monophasic action potential. Shock Timing During Early Fibrillation ... wavefronts excite new fibrillation action potentials immediately following termination of the ...
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Seasonal Variation in Conduction Velocity of Action Potentials in Squid Giant Axons.
The Biological Bulletin
; ... giant axon are seasonally acclimated, action potentials, recorded at different temperatures ... Parameters relating to the duration of the action potential (e.g., maximum rate of rise, maximum ... and analysis of the rise time of the action potential foot suggested that a change in the ...
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Ca(2+) entry-dependent inactivation of L-type Ca current: A novel formulation for cardiac action potential models
Biophysical Journal
; ... implementation of I^sub Ca,L^ in cardiac action potential models therefore requires thorough ... novel formulation of I^sub Ca,L^ for action potential models that does not explicitly require ... framework of the standard cardiac action potential model. The new formulation produced ...
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Stabilizing Role of Calcium Store-Dependent Plasma Membrane Calcium Channels in Action-Potential Firing and Intracellular Calcium Oscillations
Biophysical Journal
; ... oscillations (CaOs) and repetitive action-potential firing. These phenomena have been ... stable long-term periodic firing of action potentials and CaOs, it is essential to incorporate ... and trigger repetitive firing of action potentials. At high IP^sub 3^ concentrations ...
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Action Potential Duration Restitution Portraits of Mammalian Ventricular Myocytes: Role of Calcium Current
Biophysical Journal
; ABSTRACT Construction of the action potential duration (APD) restitution portrait ... for a given heart rate, a shorter action potential duration (APD) allows for a longer ... variety of ionic currents underlie the action potential (AP) in different species. However ...
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