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Updated: May 28, 2025
Henry Rutgers Marshall; the remarks are not less interesting for being brought forward without any connection with the question of maternal impressions: "It is true that, so far as we know, the nervous system of the embryo never has a direct connection with the nervous system of the mother: nevertheless, as there is a reciprocity of reaction between the physical body of the mother and its embryonic parasite, the relation of the embryonic nervous system to the nervous system of the mother is not very far removed from the relation of the pre-eminent part of the nervous system of a man to some minor nervous system within his body which is to a marked extent dissociated from the whole neural mass.
If the brain is poisoned by alcohol or in fever, if an infectious disease has destroyed the brain cells, action is no longer the outcome of the normal coöperation of the organs, and even those clusters of neural activities which are accompanied by the consciousness of the own personality lose their control of the motor outcome.
Attached to the lower end of the sacrum is a group of from two to four small vertebræ, more or less fused, called the coccyx. B. From the side. 1. Body. 2, 3, 4, 5. Projections from the neural arch. *The Joining of the Vertebræ.*—A typical vertebra consists of a heavy, disk-shaped portion in front, called the body, which is connected with a ring-like portion behind, called the neural arch.
Are these entirely electrical and chemical forces, the neural impulses being mere electrical currents? Or are there other forms of energy which experimental physiology has not as yet brought to light?
We can infer from this the common descent of the three groups with all the more confidence when we find the Balanoglossus approaching the Chordonia in other respects. Thus, for instance, the chief part of the central nervous system is a long dorsal neural string that runs above the gut and corresponds to the medullary tube of the Chordonia.
He had undergone extensive glandular and neural operations of great delicacy, many of which had resulted in what could have been agonizing pain without the use of suppressors. As a result, he possessed a biological engine that, for sheer driving power and nicety of control, surpassed any other known to exist or to have ever existed on Earth with the possible exception of the Nipe.
Still, much remains to be done, particularly in the realm of the explanation of clairvoyance, and in the investigation of the neural and general physiological concomitants of the condition. In the field of "thought-" and "spirit-photography," the possibilities of research and experimentation are obvious and almost unlimited. The recent researches of Dr.
These medullary swellings join together over the furrow, and form a tube; in this case, again, the neural or medullary tube is at first open in front, and connected with the primitive gut behind by the neurenteric canal. Further, in the Ascidia-larva also the two permanent apertures of the alimentary canal only appear later, as independent and new formations.
My note-books seem to show that manufacturers and certain classes of railway officials are the most liable to suffer from neural exhaustion. Next to these come merchants in general, brokers, etc.; then, less frequently, clergymen; still less often, lawyers; and, more rarely, doctors; while distressing cases are apt to occur among the overschooled young of both sexes.
The explanation of this is to be found in all the physiological attachments of woman's mind: in the fact that mental images are in her over-intimately linked up with emotional reflex responses; that yielding to such reflex responses gives gratification; that intellectual analysis and suspense of judgment involve an inhibition of reflex responses which is felt as neural distress; that precipitate judgment brings relief from this physiological strain; and that woman looks upon her mind not as an implement for the pursuit of truth, but as an instrument for providing her with creature comforts in the form of agreeable mental images.
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