On the localisation of movements in the brain / by J. Hughlings Jackson.
- Jackson, John Hughlings, 1834-1911.
- Date:
- [1875]
Licence: Public Domain Mark
Credit: On the localisation of movements in the brain / by J. Hughlings Jackson. Source: Wellcome Collection.
Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.
19/90
![had for mere simplicity of illustration spoken only of move- ments of the arm.* From this quotation, also, the reader will observe that I long ago held that the “ organ of mind” con- sists of nervous arrangements representing movements. The arrangement of nervous elements representing increasing complexity of movement, is supposed to begin with the nerve-trunks. (See on this point also the foot note p. x.) ie Just as in the arm-nervous-system there is a gradually increasing complexity, from the delivery of nerves to muscles through interweaving of nerves in the nerve-trunks, to an interrelation so great in the corpus striatum, that damage to a small part of this organ weakens the whole of the limb, and yet destroys no single movement—so we may fairly infer that, continued from the corpus striatum, deeper in brain— further in mind—are still more complex arrangements of motor processes, reaching a minute degree of interrelation and a vast width of association with the complex motives—the sensation aspect of mind—of the hemisphere, and becoming at length so complete that a quantity of brain may be des- troyed without any special [striking] mental defect resulting.” {Med. Times and Gazette, December 21, 18(57.) I reproduce another statement of the hypothesis, somewhat differently put. It is from the “ Study of Convulsions.” This quotation also shews that I then (1870) believed the convolu- tions to contain processes representing movements, and that discharge of them produced convulsions. “ Then it may be said that one convolution will represent only the movements of the arm, another only those of speech, another only those of the leg, and so on. The facts above stated show that this is not the plan of structure of the nervous system. Thus, to take an illustration, the external parts x, y, and z, are each represented by units of the corpus * As will be seen by later quotations, I suppose the whole of the body to be represented in the highest nervous processes.](https://iiif.wellcomecollection.org/image/b22355078_0021.jp2/full/800%2C/0/default.jpg)
