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Updated: May 4, 2025
He neither knew his name, his language, his home, his business, nor anything else. The doctors held learned consultations upon him, and discoursed upon the centre of memory and depressed tables, deranged nerve-cells and cerebral congestions, but all their polysyllables began and ended at the fact that the man's memory was gone, and that it was beyond the power of science to restore it.
Further, the somewhat greater frequency and acuteness of headache in brain workers although the difference between them and muscle workers in this regard has been exaggerated is probably due in part to the greater sensitiveness of their nerves; but more so to the curious fact, discovered in careful experiments upon the nervous system, that the fatigue products of the nerve-cells are the deadliest and most powerful poisons produced in the body.
In nerve tissue, impressibility, conductivity and modifiability are developed to a marked degree. The nerve-cells in the sense organs are impressed by stimulations from the outside world. The nervous current thus generated is conducted over long nerve fibers, through the spinal cord to the brain where it is received and we experience a sensation.
They traced them from one rebirth to another in kharma, as modern speculation traces them physically in heredity. The one saw no relief except in the changes of endless transmigrations, the other finds it only in the gradual readjustment of the nerve-cells. But we know by observation and experience that the spiritual power of the Holy Ghost can transform character at once.
But new nerve-cells are constantly being rebuilt, and constantly being put to use in the organism. If this theory were true, then a brain in middle age would be unable to function because of the impossibility of renewing its cells.
They are called sensory neurones and their function is to carry messages inward to the brain. Thus, the brain represents, in great part, a central receiving station for impressions from the outside world. The nerve-cells carrying messages from the various parts of the body terminate in particular areas.
The nerve-cells in this group are called motor neurones and their function is to carry messages from the brain out to the muscles, for a muscle ordinarily does not act without a nervous current to set it off. So far we have seen that the brain has the two functions of receiving impressions from the sense-organs and of sending out orders to the muscles.
A man, so far as he concerns this discussion, consists of a certain quantity of bones, with muscles and tendons capable of setting them in motion " "Be careful," Bella warned him. "It's safer to avoid these details. Besides, you're leaving something out; I don't mean the nerve-cells, but the inner personality, whatever it is, that commands them."
We shall secure further light upon the action of the nervous system if we examine some of the properties belonging to nerve-cells. The first one is impressibility. Nerve-cells are very sensitive to impressions from the outside. If you have ever had the dentist touch an exposed nerve, you know how extreme this sensitivity is.
What superstitious notions have got into our heads and taken possession of its empty chambers, or, in the language of science, seized on the groups of nerve-cells in some of the idle cerebral convolutions! The writer, I say, becomes acquainted with his characters as he goes on. They are at first mere embryos, outlines of distinct personalities.
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