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Updated: June 19, 2025
The cerebral hemispheres have now so much increased in size as, more or less, to hide the representatives of the optic lobes, which remain comparatively small, so that the brain of a Marsupial is extremely different from that of a Bird, Reptile, or Fish.
Then the difference between representation, which is a purely psychological phenomenon, and a cerebral state which is a material one, and reducible to movement, is insisted upon; and it is declared that these two orders of phenomena are separated by irreducible differences.
Practical knowledge of design and modeling i.e., of contour and relief though resulting from natural or acquired disposition, depends on cerebral conditions, the development of definite sensory-motor regions and their connections; and on psychological conditions the acquisition and organization of appropriate images.
The fore-end of the medullary tube expands into a vesicle and forms the brain, which soon divides into five cerebral vesicles. In the sides of it appear the three higher sense-organs: nose, eyes, and auditory vesicles. No jaws, limbs, or floating bladder. The ancestors of these Amniotes develop an amnion and allantois, and gradually assume the mammal, and finally the specifically human, form.
Just as these violent but temporary cerebral excitements produce violent but temporary disturbances of the viscera; so do the less violent but chronic cerebral excitements produce less violent but chronic visceral disturbances.
When men fully understand their own mind's scope, they will find that what the world calls un-natural states of consciousness, are only cerebral and psychic disassociation. The greater freedom of the race, and the cure and control of insanity will be found in the deeper study of all levels of mind rather than the one or the few.
I moved round with this man and heard him recite his tale three times, and every time he used just the same form of words, which he repeated pat like a lesson. His corruption of "cerebral" was amusing. "Nearly scattered the cerveral nerve, so help me!" he said. One could have understood it if he had been in the Spanish-American war. Another soldier used a word which I cannot explain.
This question is one of great interest as, in recent years, there has been constant agitation of the possibility of surgical procedures in cardiac as well as cerebral injuries. Del Vecchio has reported a series of experiments on dogs with the conclusion that in case of wounds in human beings suture of the heart is a possible operation.
Hence arise many positions of articulation that we are not familiar with, such as the typical "dental" position of Russian or Italian t and d; or the "cerebral" position of Sanskrit and other languages of India, in which the tip of the tongue articulates against the hard palate.
It was found, indeed, that the cerebral centres of motor activities have not quite the finality at first ascribed to them by some observers, since it may often happen that after the destruction of a centre, with attending loss of function, there may be a gradual restoration of the lost function, proving that other centres have acquired the capacity to take the place of the one destroyed.
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