Emil du Bois-Reymond by Heinrich Boruttau (auth.)

By Heinrich Boruttau (auth.)

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Extra info for Emil du Bois-Reymond

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DuB 0 i s - R e y m 0 n d hat an dieser Theorie der Reihe nach Veranderungen angebracht, veranlafit durch weitere Beobachtnngen elektrischer Erscheinungen von grundlegender Wichtigkeit an Muskeln und Nerven, von denen die :wichtigste diejenige der von ihm sogenannten "negativen Schwankung" des ruhenden Muskel-, bzw. Nervenstromes hei der Tatigkeit ist. ES' gelang ihm der sichere Nachweis, dan in heiden Fallen nicht nur bei kiinstlicher Reizung durch eine Reihe zugeleiteter elektrischer Schlage, sondern auch bei geeigneter mechanischer und chemischer Reizung des Nervenstammes, ja, auch bei der natiirlichen, das heiGt reflektorischen Erregung im Strychninkrampf, der zwischen Langs- und Querschnitt ab~ 34 geleitete Strom eine Verminderung wahrend der Dauer dieser Erregung erfahrt, die duB 0 i s - R e y m 0 n d eben die negative Schwankung (namlich des von ihm als Ausdruck innerer Spannung dauernd vorhanden - "prae:x;istierend·' - gedachten.

Her man n und E w aId Her i n g, der damals in Prag wirkende Meister neuzeitHcber Sinnespbysiologie, zu der sogenannten Alterationstbeorie der bioelektrischen Erscheinungen, welcbe annimmt, dall der in abstE>rbenden und erregten Stellen der lebenden Substanz herrschende lebbaftere Stoffwechel die Grundlage der bioelektrischen Differenz bildet, also in letzter Linie ein c hem i s c her Unterschied, womit sebr gut die Beobachtungen stimmten, dall auch an Drusen und absondernde Zellen enthaltenden Schleimbauten recht kraftige elektrische Strome sich nachweis en lassen, die je nach dem Ruhe- oder Absonderungszustande des Organs verschieden gerichtet sein konnen.

Und wenn auch tiber das Wesen dieser Ionenverschiebung die Akten noch nicht geschlossen sind, so darf doch gesagt werden, dafi Emil

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