Action Potential
نویسنده
چکیده
Glossary activation a term referring to the time-and voltage-dependent growth of a membrane conductance after membrane depolarization all-or-nothing a term that refers to the property that action potentials, if they occur, have a stereotyped shape that is largely independent of the size and form of the suprathreshold stimulus current clamp an experimental protocol in which transmembrane current is controlled, usually at a series of constant values, and resulting transmembrane potentials are measured depolarization making membrane potential less negative hyperpolarization making membrane potential more negative inactivation the time-and voltage-dependent decline of the Na + conductance, which follows shortly after its activation membrane potential the voltage difference across the neural membrane refractory period the period immediately after an action potential, in which it is difficult or impossible to induce a second action potential
منابع مشابه
The Different Mechanisms of Action Potential Propagation in the Heart
It was thought previously that cardiac muscle gap junctions provide low-resistance connections between cells and permit the local-circuit current to flow. Some evidences show that myocardial cells may not require low-resistance connections for successful propagation of the action potential (AP). It seems that some other types of mechanisms must be involved in AP propagation. In this article, we...
متن کاملThe Different Mechanisms of Action Potential Propagation in the Heart
It was thought previously that cardiac muscle gap junctions provide low-resistance connections between cells and permit the local-circuit current to flow. Some evidences show that myocardial cells may not require low-resistance connections for successful propagation of the action potential (AP). It seems that some other types of mechanisms must be involved in AP propagation. In this article, we...
متن کاملA new reduced mathematical model to simulate the action potential in end plate of skeletal muscle fibers
Usually mathematicians use Hodgkin-Huxley model or FitzHug-Nagumo model to simulate action potentials of skeletal muscle fibers. These models are electrically excitable, but skeletal muscle fibers are stimulated chemically. To investigate skeletal muscle fibers we use a model with six ordinary differential equations. This dynamical system is sensitive to initial value of some variables so it is...
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All living cells have a membrane which separates inside the cell from it's outside. There is a potential difference between inside and outside of the cell. This potential difference will change during an action potential. It is quite common to peruse action potentials of skeletal muscle fibers with the Hodgkin-Huxley model. Since Hodgkin and Huxley summarized some controlling currents like inwa...
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Objective: In neural response telemetry, intracochlear electrodes stimulate the auditory nerve and record the neural responses. The electrical stimulation is sent to the auditory nerve by an electrode and the resulted response, called electrically evoked compound action potential, is recorded by an adjacent electrode. The most important clinical applications of this test are evaluation and moni...
متن کاملاثر Action Potential Simulation Therapy در کاهش درد بیماران با مشکلات عضلانی اسکلتی در بیماران
Introduction: Musculoskeletal problems are the common complaints of patients refer to internal medicine clinics and the pain is the most important of them. There are different physiotherapy methods for reduction of pain and action potential simulation therapy (APS therapy) is one of newest methods. The aim of this study was to determine reduction of pain with APS therapy. Materials & Method...
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