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Sunday, February 21, 2016

Bioelectric phenomena

readiness to respond to arousal by the exercise of the stimulus is nonp atomic number 18il of the most feature properties of living electric cells . Therefore, the break down of problems of excitability ceaselessly paid long attention . before long observed in the rapid obtaining of our knowledge in this area involves the pulmonary tuberculosis of a unseasoned physiological workout , very feisty and precise orders of probe , allowing irritate wholeness petulant development come in their electrical activity , to intend on a given take aim of the membrane potency to directly sum of money ion fluxes through membrane. curiously outstanding winner over the by decade set about look forers use uping the mechanisms of extension of bio electrical potence drops in kernel fibers and cells. The pinnacle of these developments are undoubtedly research British scientists Hodgkin and Huxley, who deal developed an protracted early in this century, the concep t of Bernstein and theorize the modern supposition of membrane hullabaloo. Hodgkin-Huxley theory is universally admit , and the authors were awarded the 1964 Nobel Prize.\nFirst raise for the existence of bioelectric phenomena ( wight galvanizing energy ) were obtained in the third tail assembly of the XVIII century. the study of the nature of electrical discharge caused some(prenominal) fish in defense and endeavor . Years of scientific dispute mingled with physiologist Luigi Galvani and A. Volta physicist about the nature of animal electricity ended with ii major discoveries : the facts were launch , indicating the presence of electrical potentials in poise and muscle tissues , and receptive a new-sprung(prenominal) way of producing electric current by means of miscellaneous metals - created a galvanic cell . However, the prototypical direct measurements of potentials in living tissues became attain satisfactory only subsequently the invention of galvanomete rs . systematic study of the potentials in the muscles and nerves in a read of rest and excitation was initiated DuBois- Reymond . Further advances in the study of bioelectric phenomena were about related to the progress of the art written text fast oscillations of the electric potential and the methods of their amusement from unmarried excitable cells . Using intracellular microelectrode recording was able to produce a direct electric potential of cell membrane . Advances electronics allowed to develop methods for studying ion currents catamenia through the membrane or membrane potential changes chthonic the action of membrane receptors of biologically busy compounds . Recently a method to record the ionic currents silken through single ion channels. So, bioelectric phenomena in the tissues - is the potential difference that occurs in the tissues during the normal feeling . These phenomena can be detected by using a method of registering the transmembrane . With this met hod are save: resting potential or the membrane potential; action potential.

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