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Werner E. Reichardt
German physicist and biologist

Werner E. Reichardt

Werner E. Reichardt
The basics

Quick Facts

Intro German physicist and biologist
A.K.A. Werner Reichardt
Was Scientist Physicist Biologist Educator
From Germany
Field Academia Science
Gender male
Birth 30 January 1924, Berlin, Germany
Death 18 September 1992, Tübingen, Tübingen, Tübingen, Baden-Württemberg (aged 68 years)
The details (from wikipedia)


Werner E. Reichardt (30 January 1924 – 18 September 1992) was a German physicist and biologist who helped to establish the field of biological cybernetics. He co-founded the Max Planck Institute for Biological Cybernetics, and the Journal of Biological Cybernetics.


As a young student, Werner Reichardt was a pupil in the laboratory of Hans Erich Hollmann, a pioneer of ultra-shortwave communication. Because of his knowledge he was drafted in 1941 to the German air force as a radio technician. There he came into contact with resistance elements, and built a secret radio link with the Western Allies. In 1944 Reichardt was arrested by the Gestapo and sentenced to death, but escaped, and hid in Berlin until the end of the war.

From 1946 to 1950 he studied physics at the Technical University of Berlin. From 1950 he was a doctoral student of Ernst Ruska, studying solid state semiconductors at the Fritz-Haber-Institut of the Max-Planck-Gesellschaft, and received his doctorate in 1952. From 1952 to 1954 he was an assistant at the Institute where his teacher Max von Laue was a large influence to his later research. During the war, Reichardt had known Bernhard Hassenstein, who had studied otptomotor turning behaviour after the war. Realising these experiments could be formalised in a similar way to electronics experiments, he developed interdisciplinary theories of motion perception. In 1954, Reichardt became a Postdoctoral Fellow at the California Institute of Technology at the invitation of Max Delbrück. From 1955 he was assistant at the Max Planck Institute for Biophysical Chemistry in Göttingen under Karl Friedrich Bonhoeffer. In 1958 he founded together with Bernhard Hassenstein and Hans Wenking the cybernetics research group at the Max-Planck-Institute of Biology in Tübingen. In 1968 the department was transformed into the independent Max Planck Institute for Biological Cybernetics.

Reichardt died at the age of 68 years after collapsing at the end of a symposium organised in his honour.


Reichardt's findings have contributed to understanding of information processing in nervous systems. From joint work (with Bernhard Hassenstein and Hans Wenking) on the visual system of insects and its effect on the flight orientation, the correlation model developed the idea that the visual system of man could be similarly investigated, and led to a general theory of motion perception

Reichardt detectors

See Motion perception#First-order motion perception

In the 1950s, Reichardt, along with Hassenstein proposed a model of how a neuron receiving input from photoreceptors, which only respond to changes in luminance, could be used to compute motion. Each photoreceptor, responded to a change in luminance at a given location in visual space. Comparison of the phase shift of activity in adjacent cells indicated the direction of movement from one neuron's receptive field to the other. This model of micro-circuitry became known as a Reichardt detector. Whilst there is experimental evidence consistent with the hypothetical behaviour of a Reichardt detector, the corresponding circuitry has not yet been found.

Honors and Awards

  • 1965: Honorary Professor of the University of Tübingen
  • 1970: full member of the Academy of Sciences and Literature Mainz
  • 1971: full member of the German Academy of Sciences Leopoldina Hall
  • 1972: foreign member of the American Academy of Arts and Sciences Cambridge (Massachusetts)
  • 1978: foreign member of the Koninklijke Nederlandse Akademie van Wetenschappen, Amsterdam
  • 1980: Pour le Mérite for Sciences and Arts,
  • 1984: Senator of the Max Planck Society
  • 1985: HP Heineken Prize for Biochemistry and Biophysics (together with Bela Julesz)
  • 1988: foreign member of the National Academy of Sciences, Washington, D.C.
  • 1989: foreign member of the American Philosophical Society Philadelphia
  • 1989: Member of the Academia Europaea
  • 1989: honorary doctorate of the RWTH Aachen
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