Ewald Hering

Ewald Hering

Infobox Scientist
name = Ewald Hering
birth_date = August 5, 1834
birth_place = Alt-Gersdorf, Saxony
death_date = January 26, 1918
death_place = Leipzig, Saxony
residence =
citizenship =
nationality = Germany
ethnicity =
field = physiology
work_institutions =
alma_mater =
doctoral_advisor =
doctoral_students =
known_for = color vision
influences =
influenced =
prizes =
religion =
footnotes =

Karl Ewald Konstantin Hering (August 5, 1834 – January 26, 1918) was a German physiologist who did much research into color vision and spatial perception. His uncle was the homeopath Constantine Hering.

Born in Alt-Gersdorf, Kingdom of Saxony, Hering studied at the University of Leipzig and became a professor at Charles University in Prague.

Color theory

Hering disagreed with the leading theory developed mostly by Thomas Young and Hermann von Helmholtz.cite book |author=Turner, R. M. |title=In the eye's mind: vision and the Helmholtz-Hering controversy |publisher=Princeton University Press |location=Princeton, N.J |year=1994 |pages= |isbn=0-691-03397-8 |oclc= |doi=] Helmholtz's theory stated that the human eye perceived all colors in terms of three primary colors: red, green, and blue. Hering instead believed that the visual system worked based on a system of color opponency, a proposal now widely recognized as correct.

Hering looked more at qualitative aspects of color and said there were six primary colors, coupled in three pairs: red-green, yellow-blue and white-black. Any receptor that was turned off by one of these colors, was excited by its coupled color. This results in six different receptors. It also explained afterimages. His theory was rehabilitated in the 1970s when Edwin Land developed the Retinex theory that stated that whereas Helmholtz's colors hold for the eye, in the brain the three colors are translated into six.

Other research

In 1861 Hering described an optical illusion which now bears his name - Hering illusion. He also developed Hering's law of equal innervation to describe the conjugacy of saccades in animals.

The Hering-Breuer reflex is also named for him.

References

*Citation
id = PMID:11639585
url= http://www.ncbi.nlm.nih.gov/pubmed/11639585
last=Turner
first=R S
publication-date=1993
year=1993
title=Vision studies in Germany: Helmholtz versus Hering.
volume=8
issue=
periodical=Osiris
pages=80-103

*Citation
id = PMID:1303712
url= http://www.ncbi.nlm.nih.gov/pubmed/1303712
last=Baumann
first=C
publication-date=1992 Jun
year=1992
title= [Ewald Hering's opponent colors. History of an idea]
volume=89
issue=3
periodical=Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
pages=249-52

*Citation
id = PMID:9061228
url= http://www.ncbi.nlm.nih.gov/pubmed/9061228
last=Janko
first=J
publication-date=1995
year=1995
title=Mach and Hering's physiology of the senses.
volume=33
issue=
periodical=Clio medica (Amsterdam, Netherlands)
pages=89-96

External links

* [http://www.whonamedit.com/doctor.cfm/2647.html Who Named It?, Karl Ewald Konstantin Hering]


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  • Ewald Hering — (1835 1918) Farbkreis nach Ewald Herings Gegenfarbtheorie, die er da …   Deutsch Wikipedia

  • Ewald Hering — Ewald Hering. Karl Ewald Konstantin Hering (5 de agosto de 1834; 26 de enero de 1918) fue un fisiólogo alemán recordado por sus investigaciones sobre la visión del color y la percepción espacial. Estudió en la universidad de Leipzig y llegó a ser …   Wikipedia Español

  • Ewald Hering — Karl Ewald Konstantin Hering Pour les articles homonymes, voir Hering. Karl Ewald Konstantin Hering (5 août 1834 – 26 janvier 1918) est un physiologiste …   Wikipédia en Français

  • Heinrich Ewald Hering — (* 3. Mai 1866 in Wien; † 16. Dezember 1948 in Papenhusen) war Sohn des Physiologen Ewald Hering und selbst bedeutender Mediziner. Hering studierte in Prag und Kiel, wo er 1893 promovierte und bis 1898 am Institut für Pathologie wirkte. 1895… …   Deutsch Wikipedia

  • Hering (Familienname) — Hering ist der Familienname folgender Personen: Adolf Hering (1863–1932), deutscher Maler und Illustrator Bertolt Hering (* 1961), Maler, Filmemacher, Farbenforscher Björn Hering (* 1978), Schweizer Fernsehmoderator und Unternehmer Carl Hering… …   Deutsch Wikipedia

  • Hering's law of equal innervation — is used to explain the conjugacy of eye movements (saccades) in stereoptic animals. The law proposes that conjugacy of saccades is due to innate connections in which the eye muscles responsible for each eye s movements are innervated equally. The …   Wikipedia

  • Hering-Breuer reflex — histinfo|How did Hering and Breur discover the reflex?}The Hering Breuer inflation reflex, named for Josef Breuer and Ewald Hering [WhoNamedIt|synd|3172] [K. E. K. Hering. Die Selbststeuerung der Athmung durch den Nervus vagus. Sitzungsberichte… …   Wikipedia

  • Hering-Reflex — Der Karotissinusreflex (auch Hering Reflex, nach Heinrich Ewald Hering, und nicht zu verwechseln mit dem Hering Breuer Reflex) ist ein Schutzmechanismus des Körpers zur Stabilisierung des zentralen Blutdrucks und damit zur Sicherung der… …   Deutsch Wikipedia

  • Hering-Breuer-Reflex — Der Hering Breuer Reflex oder Lungendehnungsreflex ist die reflektorische Begrenzung der Inspiration, wenn die Ausdehnung der Lunge ein gewisses Maß überschreitet. Die Lungendehnungsafferenzen laufen dabei im Nervus vagus. Dadurch wird eine… …   Deutsch Wikipedia

  • Hering illusion — The Hering illusion is an optical illusion discovered by the German physiologist Ewald Hering in 1861. The two vertical lines are both straight, but they look as if they were bowing outwards. The distortion is produced by the lined pattern on the …   Wikipedia

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