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Updated: July 17, 2025
As, moreover, it has been determined on strong evidence that the cerebral vessels are not supplied with vasomotor nerves, and that the cerebral circulation passively follows every change in the arterial pressure, it becomes evident that sleep cannot be occasioned by any active change in the cerebral vessels.
Such good action of alcohol is often seen when the surface of the body is cold from chilling, or the extremities are cold from vasomotor spasm. A good-sized dose of alcohol, best given hot, equalizes the circulation and acts for good.
The skin may be actually scarred with a lead pencil if the patient be told that it is red-hot iron. The suggested pain brings about vasomotor and other bodily changes that prove, as similar tests in the other cases prove, that simulation is impossible and the phenomena are real.
Anatomically, the auditory nerve not only goes to those parts of the brain whence the motor innervation emanates, and to the reflex centres in the cerebellum, but passes close by the vagus or pneumogastric nerve, which rules the heart and the vasomotor functions.
The same vasomotor instability which shows itself in the tendency to syncopal attacks is apparent in many other ways. Sudden sensations of heat and of flushing, equally sudden attacks of pallor, coldness of the extremities, abundant perspiration, raising in the mind of the anxious mother the fear of consumption, and excessive diuresis are common accompaniments.
In fact, this confidence which such a patient has in the physician who has more or less frequently aided him in weathering these terrible attacks is alone the greatest boon the patient can have. The immediate conditions to meet are the rapid fluttering heart, the nervous excitation and cardiac anxiety, and perhaps the most important of all, the vasomotor spasm that is often so pronounced.
But he might as well have attended a drama by Charles Klein for all the rakish romance he has unearthed. His evening has gone. His legs are weary. And nothing has happened to astound or flabbergast him, to send him sprawling with Cheyne-Stokes breathing. In all his promenading he has seen nothing to affect his vasomotor centres or to produce Argyll-Robertson pupils.
It is assumed that the poison and the cold night air together had paralyzed her vasomotor nerves and reduced her body to a state akin to hibernation, wherein physical needs are at their minimum. That case has doubtless awakened these suspicions, and having regard to them, we will keep the poor gentleman in a warm room and proceed with the classical means for restoring respiration."
He hastily set down the basin and sponge on a chair, then straightened up in a vain effort to regain mastery of himself. "Ah," said the doctor. "Poor Ike! The spirit is willing, but the sympathetic nerve is evidently seriously disturbed, thereby affecting the vasomotor, and will likely produce complete syncope. Lay him down on his back immediately." "No," said Ike, "I aint no good. I'm going out."
Meanwhile the pressure thus exerted on the nervi vasorum sets up vascular changes which bring about epithelial changes in more distant areas, the process advancing anteriorly, that is, in the direction of the arteries. This makes the cause, according to Eyles, an inflammatory and trophic phenomenon due mainly to changes following pressure on the vasomotor nerves. Etiology.
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