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- W2314094577 abstract "According to Maxwell's2 classification, based on work with mammals, there are two classes of excitants for nervous tissue, viz: (1) those which act only upon the medullated fibers, such as the calcium precipitants, (2) those which act on the gray matter only, as creatin and strychnin. In order to determine possible similarities and differences between mammalian nervous tissue and that of one of the annelids, experiments were carried out on the nerve cord of the earthworm, Lumbricus terrestris. In these experiments the worm was decapitated, the anterior end of the preparation pinned down and the nerve cord laid bare. The cord was then dissected free for a distance of about 20 segments and the stimulating substances applied directly to it. Stimulation was indicated by squirming movements of the posterior segments.Excitants of the first class, KC1, BaC12, and Na3 citrate, each in M/8 concentration, gave marked excitation. Of the excitants of the second class, camphor and strychnin, each in saturated solution..." @default.
- W2314094577 created "2016-06-24" @default.
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- W2314094577 date "1921-04-01" @default.
- W2314094577 modified "2023-09-25" @default.
- W2314094577 title "Chemical stimulation of the annelid nerve cord" @default.
- W2314094577 doi "https://doi.org/10.3181/00379727-18-107" @default.
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