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.
6/90
![certain cases of paralysis with regard only to the Localization of Movements in the Brain. In this Preface I shall show that I have for more than ten years, and before the experi- ments of Hitzig and Ferrier were made, held that convolutions contain nervous arrangements representing movements. It is in accordance with this belief that I have long considered chorea,* and more lately convulsion, to be movements re- sulting from “ discharges” of the cerebral cortex. The careful investigation of such motor symptoms, with a view to the localization of movements, is a subject in which I have for some years felt deeply interested. So far back as seven years ago I suggested that the facts of convulsive seizures should be used for purposes of Localization. In the Medical Times and Gazette, Aug. 15, 1868, I published a note on “ Localization,” various kinds of convulsive seizures being the facts brought forward. At that time, however, I believed the corpus striatum to be the part discharged in convulsions beginning unilaterally, although then and several years before I believed the convolutions also to contain processes repre- senting movements. What at this time interested me most was, not so much the Localization of movements in the cerebral hemisphere, in the sense that, for example, the move- ments of the foot are localized here and those of the arm in another place, but the facts of the cases as they bore on a broad principle of Localization. I considered them as part of the evidence that the most special or most voluntary movements have the Leading Representation (see Section 10, p. 11). For in disease the most voluntary or most special movements, faculties, &c., suffer first and most, that is in an * Thus Lond. Hosp. Rep., Vol. i, p. 459, 1864, after suggesting that choreal movements result from changes induced in convolutions by embolism, I write:—“ There is no more difficulty in supposing that there are certain convolutions superintending those delicate movements of the hands, which are under the immediate control of the mind than that there is one, as Broca sug- gests, for movements of the tongue [articulatory organs] in purely mental operations.” I still think to the same effect, but should not now use such vague phraseology.](https://iiif.wellcomecollection.org/image/b22355078_0008.jp2/full/800%2C/0/default.jpg)
