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.
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![hemisphere is made up of processes representing impressions and movements. It seems to me to be a necessary implica- tion of the doctrine of Nervous Evolution as this is stated by Spencer. When speaking of convulsions (a mass of movements) as being owing to discharges of convolutions (“ Study of Convul- sions,” St. Andrew’s Medical Graduates’ Transactions, vol.iii., 1870), I say—a It is asserted by some that the cerebrum is the organ of mind, and that it is not a motor organ. Some think the cerebrum is to be likened to an instrumentalist, and the motor centres to the instrument—one part is for ideas, and the other for movements. It may, then, be asked, How can discharge of part of a mental organ produce motor symp- toms only? I say motor symptoms only, because, to give sharpness to the argument, I will suppose a case in which there is unilateral spasm without loss of consciousness. But of what ‘ substance ’ can the organ of mind be composed, unless of processes representing movements and impressions; and how can the convolutions differ from the inferior centres, except as parts representing more intricate co-ordinations of impressions and movements in time aud space than they do ? Are we to believe that the hemisphere is built on a plan fundamentally different from that of the motor tract ? What can [the anatomical substratum of] an ‘ idea.’—say of a ball —be, except a process representing certain impressions of surface and particular muscular adjustments ? What is recol- lection but a revivification of such processes, which, in the past, have become part of the organism itself? What is delirium, except the disorderly revival of sensori-mtfor pro- cesses received in the past ? What is a mistake in a word, but a wrong movement—a chorea ? Giddiness can be but the temporary loss or disorder of certain relations in space, chiefly made up of muscular feelings. Surely the conclusion is irresistible, that f mental ’ symptoms from disease of the](https://iiif.wellcomecollection.org/image/b22355078_0017.jp2/full/800%2C/0/default.jpg)
