Cognition and Recognition: On the Origin of Movement: - download pdf or read online

By Leon Hogenhuis

ISBN-10: 9004168362

ISBN-13: 9789004168367

This publication throws a penetrating mild at the existence and paintings of the physiologist became neurologist G.G.J. Rademaker opposed to the historical past of flourishing scientific learn within the Netherlands of the early 20th century. It charts the increase and fall of the department of experimental neurophysiology of which Rademaker used to be a grasp, which used to be transmitted from Charles Sherrington in England to Rudolf Magnus at Utrecht after which to Rademaker, Magnus's such a lot gifted scholar. achieving its apogee within the Twenties and Nineteen Thirties, it was once changed after global warfare II via different much less invasive techniques. This biography is a becoming memorial to a guy who, notwithstanding a little overlooked in his personal land, used to be regarded as a genius by means of his friends around the globe.

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Additional info for Cognition and Recognition: On the Origin of Movement: Rademaker (1887-1957) (History of Science and Medicine Library)

Sample text

The reac- 7 Magnus R. , “Die Abhängigkeit des Tonus der Extremitätenmuskeln von der Kopfstellung”, Pflüger’s Archiv. ges. Physiol. des Menschen u. der T. 145, 455–548, p. 468, 1912. experimental physiology 31 tion was however eliminated by transection of both first cervical nerves and the posterior roots of the third cervical nerve pair. The occurrence of the head-rotation reflex has thus been confirmed by independent observations in two different laboratories. Sherrington8 confirmed this and added: In addition, the active and passive rotation of the neck about its long axis in the decerebrate preparation inhibits the tonus of the extensors in the posterior limb on the same side as the downward ear and gives rise to active flexion of the knee; the same reaction is found after section of the two Vth pairs of cranial nerves and the two VIIIth pairs.

He had noticed the uncertainty concerning the level at which the cut was made to bring about decerebrate rigidity in the experimental animal, had also noted the differences between the various experimental animals studied when the cut was made at different levels and had finally shown how consideration of the function of the nucleus ruber explained this phenomenon. Sherrington had been aware of this effect, but had been unable to produce an explanation for it. In order to understand Rademaker’s later scientific work properly, we need to pause here to review Magnus’s work and sketch the state of affairs in the laboratory where he and his research team were active at the time when Rademaker started his research there.

Magnus Sr. at Utrecht (1922–1927; elaboration of the concept of posture (‘Körperstellung’) Back in the Netherlands after six years as a GP in the Dutch East Indies, and “with the firm determination not to seek a surgical practice in a general hospital” (Verbiest), Rademaker decided to start by visiting clinical centres in Berlin, Paris and London to see what had been going on in the medical world in his absence. He was struck by the new developments in the field of neurophysiology, and made a decision which would prove to be crucial in shaping the whole of his future career.

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Cognition and Recognition: On the Origin of Movement: Rademaker (1887-1957) (History of Science and Medicine Library) by Leon Hogenhuis

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