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Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. Hofgartenstraße 8 80539 München, Germany http://www.mpg.de
Contact Mr Prof. Dr. Herwig Baier +49 89 85783200
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Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V.

Arbeitsteilung im Fischgehirn

Eine kleine Gruppe von Nervenzellen steuert die Schwimmrichtung

(PresseBox) (München, )
Damit ein Fisch vorwärts schwimmen kann, müssen Nervenzellen in seinem Gehirn und Rückenmark fein aufeinander abgestimmt die Hin- und Her-Bewegungen des Schwanzes kontrollieren. Doch auch die Stellung des Schwanzes, die wie ein Heckruder die Schwimmrichtung vorgibt, muss durch Hirnaktivität feinjustiert werden. Wissenschaftler des Max-Planck-Instituts für Neurobiologie in Martinsried bei München haben nun mit Hilfe der neuen Methode der Optogenetik eine kleine Gruppe von 15 Nervenzellen identifiziert, die die Bewegungen der Schwanzflosse lenken. Auch das menschliche Gehirn kontrolliert Körperbewegungen durch Nervenbahnen in der gleichen Gehirnregion und nutzt daher vermutlich ähnliche Verarbeitungsmechanismen wie der Fisch.

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