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Updated: June 7, 2025
In 1861 this patient died, and an autopsy revealed that a certain convolution of the left frontal lobe of his cerebrum had been totally destroyed by disease, the remainder of his brain being intact. Broca felt that this observation pointed strongly to a localization of the memory of words in a definite area of the brain. Moreover, it transpired that the case was not without precedent.
At last he ventured to import into his blandishments a strain of adoration that was almost avowedly romantic. In phrases of baroque convolution, he conveyed the message of his heart.
Their companions were hidden from view in a convolution of the winding road, but they were so near that their voices could be heard as they talked. Frequently the sound of laughter came backward from them. "They're jolly enough down there," he commented at last, moodily. "That's a good reason for our joining them, isn't it?" Her tone was at once casual and pointed.
Now, however, in the half-decade that followed Broca's announcements, interest rose to fever-beat, and through the efforts of Broca, Boillard, and numerous others it was proved that a veritable centre having a strange domination over the memory of articulate words has its seat in the third convolution of the frontal lobe of the cerebrum, usually in the left hemisphere.
Almost, it seemed to skim the scarlet floor of the platform and to scoop up its owner, for none saw Apleon lift a foot to step into it, yet the next moment he was soaring away seated within the upper convolution of the serpent sign.
The original screw propellers were made with several convolutions of screw, but it was found advantageous to shorten them, until they are now only made one-sixth of a convolution in length. Q. And the pitch you have already explained to be the distance in the line of the shaft from one convolution to the next, supposing the screw to consist of two or more convolutions?
Why could not she shake up her brain as one shakes up a misused sofa-cushion and beat it into proper shape? What was love that persisted in spite of the Will and the judgment, that came whence no mortal could discover, but an abnormal condition of the brain, a convolution that no human treatment could reach?
The lower half of the ascending frontal convolution, the greater half of the sigmoid gyrus, the posterior third of the lower and middle frontal convolutions, the base and posterior end of the upper convolution, and the base of the corresponding portion of the falciform lobe were involved. The sensory and motor functions of the arm were retained in a relative degree.
"Your experience, Sir Baldwin, will enable you readily to diagnose my symptoms. Owing to the passage of a bullet along a portion of the third left frontal into the postero-parietal convolution upon which, from its lodgment in the skull, it continues to press hemiplegia of the right side has supervened. Aphasia is present also...." The effort of speech was ghastly.
The fraction of a convolution which was found to be most advantageous was .281 in the case of the large screw, and .450 in the case of the small screw. Q Were screws of four blades found to be more efficient than screws with two? A They were found to have less slip, but not to be more efficient, the increased slip in those of two blades being balanced by the increased friction in those of four.
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