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Zur Funktion des Gehirns: Die Sehwelt

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Tier- und Humanphysiologie

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Zusammenfassung

Der Funktion des Gehirns nachzugehen, ist wohl die größte Herausforderung, der sich die Naturwissenschaft heute und in Zukunft stellt. Das Gehirn des Menschen soll nach einer vielzitierten Schätzung 100 Mrd. Nervenzellen enthalten, wobei die einzelne Nervenzelle mit vielleicht 100 bis 10 000 anderen Neuronen synaptischen Kontakt hat. Die Leitungsbahnen summieren sich, so wird geschätzt, auf 750 000 km, der doppelten Entfernun zum Mond. Die Nervenzellen werden begleitet von einigen Milliarden Gliazellen, die die Funktionen der Neuronen unterstützen und modifizieren. Es ist schlechterdings unmöglich, die Funktionen des Gehirns bis in alle Details aufzuschlüsseln. Das wäre vielleicht auch gar nicht sonderlich interessant. Interessanter sind die übergeordneten Strategien der Datenauswertung und die Systemeigenschaften der multizellulären Netzwerke. Wir beschränken uns auf wenige Hinweise im Bereich des Sehens.

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Authors and Affiliations

  1. Institut für Zoologie, Universität Heidelberg, Im Neuenheimer Feld 230, 69120, Heidelberg

    Professor Dr. Werner Müller & Professor Dr. Stephan Frings

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  1. Professor Dr. Werner Müller
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  2. Professor Dr. Stephan Frings
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Müller, W., Frings, S. (2009). Zur Funktion des Gehirns: Die Sehwelt. In: Tier- und Humanphysiologie. Springer-Lehrbuch. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-00462-9_23

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