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Updated: June 5, 2025
But a ganglion cell sends an impulse to a muscle because it has received one along a sensory nerve from one or more of these sensory cells. Hence the ganglion cells will increase in number. The old cobweb-like plexus condenses into a little knot, the supra-oesophageal ganglion.
All local products come via London nowadays: London is like a central ganglion, through which all sensations must travel before being felt at the outside points where they were really incurred. This is the case even with Irish patriots: they are made in Ireland, but if you want them you have to go to London clubs for them.
What, don't you believe it? Do you think you're as obvious as a poached egg on a piece of toast, like the poor lunatic? Not a bit of it, dear reader. You've got a solar plexus, and a lumbar ganglion not far from your liver, and I'm going to tell everybody. Nothing brings a man home to himself like telling everybody. And I will drive you home to yourself, do you hear?
All these various methods of anatomical examination combine to make the conclusion almost unavoidable that the central ganglion cells are the veritable "centres" of nervous activity to which so many other lines of research have pointed.
Likewise, as the sun is the great fiery, vivifying pole of the inanimate universe, the moon is the other pole, cold and keen and vivifying, corresponding in some way to a voluntary pole. We live between the polarized circuit of sun and moon. And the moon is polarized with the lumbar ganglion, primarily, in man.
At the hands of a multitude of observers it was shown that in certain well-known diseases of the spinal cord, with resulting paralysis, it is the ganglion cells themselves that are found to be destroyed. Similarly, in the case of sufferers from chronic insanities, with marked dementia, the ganglion cells of the cortex of the brain are found to have undergone degeneration.
Oh no! but what dull ache is this in that obscurely sensitive region, somewhere below the heart, where the nervous centre called the semilunar ganglion lies unconscious of itself until a great grief or a mastering anxiety reaches it through all the non-conductors which isolate it from ordinary impressions?
It would never have occurred to him, pleasant, harmless sentimentalist that he was, that John's second marriage might be a disturbing factor in his relation with Mary and that the question so cheerfully asked as an escape from the more serious matter that he had been talking about, struck straight into a ganglion of nerves. But at the time, no such excuse for him presented itself.
Newport has described the course of this concentration in insects; and by Rathke it has been traced in crustaceans. In the early stages of the Astacus fluviatilis, or common cray-fish, there is a pair of separate ganglia to each ring. Of the fourteen pairs belonging to the head and thorax, the three pairs in advance of the mouth consolidate into one mass to form the brain, or cephalic ganglion.
Rivers always seem to me like the nerves of Nature: there is no conductor of thought and impression like that little silver thread which leads out from the ganglion of a deep forest-spring, to spread, many leagues off, upon the sensory surface of the Oceanic World.
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