Johannes Wilhelm Gad (30 June 1842 – 1926) was a German
neurophysiologist who was a native of
Posen. He was father-in-law to
psychiatrist Oskar Kohnstamm (1871-1917).
Life
He was an assistant to
Emil du Bois-Reymond
Emil Heinrich du Bois-Reymond (7 November 181826 December 1896) was a German physician and physiologist, the co-discoverer of nerve action potential, and the developer of experimental electrophysiology.
Life
Du Bois-Reymond was born in Berlin a ...
(1818–1896) at the
physiological institute at the
University of Berlin
Humboldt-Universität zu Berlin (german: Humboldt-Universität zu Berlin, abbreviated HU Berlin) is a German public research university in the central borough of Mitte in Berlin. It was established by Frederick William III on the initiative ...
, and later worked under
Adolf Fick
Adolf Eugen Fick (3 September 1829 – 21 August 1901) was a German-born physician and physiologist.
Early life and education
Fick began his work in the formal study of mathematics and physics before realising an aptitude for medicine. He th ...
(1829–1901) at the
University of Würzburg
The Julius Maximilian University of Würzburg (also referred to as the University of Würzburg, in German ''Julius-Maximilians-Universität Würzburg'') is a public research university in Würzburg, Germany. The University of Würzburg is one of ...
. In 1893–1894 he was a visiting lecturer of physiology at
Western Reserve University
Western may refer to:
Places
*Western, Nebraska, a village in the US
*Western, New York, a town in the US
* Western Creek, Tasmania, a locality in Australia
*Western Junction, Tasmania, a locality in Australia
*Western world, countries that i ...
in
Cleveland, Ohio, and after returning to Germany, became departmental head at the physiological institute in Berlin. In 1895 he succeeded
Ewald Hering
Karl Ewald Konstantin Hering (5 August 1834 – 26 January 1918) was a German physiologist who did much research into color vision, binocular perception and eye movements. He proposed opponent color theory in 1892.
Born in Alt-Gersdorf, Ki ...
(1834–1918) as manager of the department of physiology at the
University of Prague.
Gad is known from his work in experimental physiology. He performed numerous investigations involving
,
spinal cord
The spinal cord is a long, thin, tubular structure made up of nervous tissue, which extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column (backbone). The backbone encloses the central canal of the sp ...
functionality, the relationship between
lactic acid
Lactic acid is an organic acid. It has a molecular formula . It is white in the solid state and it is miscible with water. When in the dissolved state, it forms a colorless solution. Production includes both artificial synthesis as well as nat ...
to muscle contraction, et al. With
Edward Flatau
Edward Flatau (27 December 1868, Płock – 7 June 1932, Warsaw) was a Polish neurologist and psychiatrist. He was a co-founder of the modern Polish neurology, an authority on the physiology and pathology of meningitis, co-founder of medical jou ...
(1868–1932), he conducted experiments that were critical of
Bastian-Bruns Law in regards to the loss of function following
spinal cord injury
A spinal cord injury (SCI) is damage to the spinal cord that causes temporary or permanent changes in its function. Symptoms may include loss of muscle function, sensation, or autonomic function in the parts of the body served by the spinal cor ...
.
Among his written works was a textbook on
human physiology
The human body is the structure of a human being. It is composed of many different types of cells that together create tissues and subsequently organ systems. They ensure homeostasis and the viability of the human body.
It comprises a head ...
that he co-authored with
pharmacologist
Pharmacology is a branch of medicine, biology and pharmaceutical sciences concerned with drug or medication action, where a drug may be defined as any artificial, natural, or endogenous (from within the body) molecule which exerts a biochemic ...
Jean-François Heymans, called ''Kurzes Lehrbuch der Physiologie des Menschen'', and a treatise on
skin sensation
In physiology, the somatosensory system is the network of neural structures in the brain and body that produce the perception of touch (haptic perception), as well as temperature (thermoception), body position (proprioception), and pain. It i ...
that he published with
Alfred Goldscheider
Johannes Karl Eugen Alfred Goldscheider (4 August 1858 – 10 April 1935) was a German neurologist born into a Jewish family in Sommerfeld (today Lubsko, Poland).
He studied medicine at Friedrich-Wilhelm Medical-Surgical Institute in Berli ...
(1858–1935), titled ''Ueber die Summation von Hautreizen''. In 1887, with
Sigmund Exner
Sigmund Exner (also ''Sigmund Exner'', ''Siegmund Exner-Ewarten'', ''Siegmund Exner Ritter von Ewarten''; 5 April 1846 – 5 February 1926) was an Austrian physiologist born in Vienna.
Academic career
He studied in Vienna under Ernst Wilhelm ...
, he founded the periodical ''Centralblatt für Physiologie''.
[Gad, Johannes - Zeno.org : Pagel: Biographical Dictionary outstanding physicians of the nineteenth century. Berlin, Vienna 1901, Sp. 573-575.]
References
* ''Parts of this article are based on a translation of an equivalent article at the
Polish Wikipedia
The Polish Wikipedia ( pl, Polskojęzyczna Wikipedia) is the Polish-language edition of Wikipedia, a free online encyclopedia. Founded on September 26, 2001, it now has more than articles, making it the -largest Wikipedia edition overall. .''
Pagel: Biographical Dictionary(biography translated from German)
{{DEFAULTSORT:Gad, Johannes
German physiologists
German neurologists
1926 deaths
1842 births
Neurophysiologists