The book Psychology was written by author James William Here you can read free online of Psychology book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Psychology a good or bad book?
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The reader must not understand the word figuratively. From the point of view of dynamics the passage of a current out of a motor cell is probably altogether analogous to the explosion of a gun. The mat- ter of the cell is in a state of internal tension, which the incoming current resolves, tumbling the molecules into a more stable equilibrium and liberating an amount of energy which starts the current of the outgoing fibre. This current is stronger than that of the incoming fibre. When it reach...es the muscle it produces an analogous dis- integration of pent-up molecules and the result is a stronger effect still. Matteuci found that the work done by a mus- cle's contraction was 27, 000 times greater than that done by the galvanic current which stimulated its motor nerve. When a frog's leg-muscle is made to contract, first directly, by stimulation of its motor nerve, and second reflexly, by stimulation of a sensory nerve, it is found that the reflex way requires a stronger current and is more tardy, but that the contraction is stronger when it does occur.
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