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Updated: May 16, 2025
Since we must choose from among these various anatomical views let us accept that of Flechsig, one of the most renowned and one having also the advantage of putting directly the problem of the organic conditions of the imagination. We know that Flechsig relies on the embryological method that is, on the development in the order of time, of nerves and centers.
There would then be, according to our author, a preponderance of the frontal and parietal regions the former obtain especially among artists; the latter among scientists. Already, twenty years before Flechsig, Rüdinger had noted the extraordinary development of the parietal convolutions in eminent men after a study of eighteen brains.
At birth, though most of the great nervous pathways are laid down, they are non-functional largely because the fibers that compose them are unclothed, non-myelinated. The various kinds of tracts have different times for becoming "myelinated" as was the discovery of the great analogist, Flechsig. At any rate, the organization of activity for definite purposes starts.
One of his intimate friends was Flechsig, but even of him he paradoxically complains that he is too sympathetic: "He never cheers me up; if I am occasionally in a melancholy mood, he ought not to be the same, and he ought to have sufficient humanity to stir me up. That I often need cheering up, I know very well."
This much admitted, let us return to our special question, which Flechsig asks in these words: "On what does genius rest? Is it based on a special structure in the brain, or rather on special irritability? that is, according to our present notions, on chemical factors? We may hold the first opinion with all possible force.
The sequence in which the maturation of levels, nerve areas, and bundles of fibers develop may be, as Flechsig thinks, causal; or, according to Cajal, energy, originally employed in growth by cell division, later passes to fiber extension and the development of latent cells; or as in young children, the nascent period of finger movements may stimulate that of the thumb which comes later, and the independent movement of the two eyes, their subsequent cooerdination, and so on to perhaps a third and yet higher level.
He said, with quizzing eyes: "Would it do any good to quote Lombroso, and Maudsley, and Gall, and Krafft-Ebing, and Flechsig, and so on? and to tell you that the excessive use of one brain faculty must necessarily cause a lack of nutriment to all the other brain-cells? It would be rather up-to-date.
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