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The consequence is that only an exceedingly small proportion of the mental energy that is developed within us is ever actually displayed. The rest is somehow and somewhere locked up behind the inhibitory threshold. It is stored away in subconsciousness with the sensory experiences of the past with which it is associated. Quoting Mr.
The principle of subconscious suggestion, of which these simple facts are less important illustrations, has very interesting applications in the higher reaches of social, moral, and educational theory. Inhibitory Suggestion. An interesting class of phenomena which figure perhaps at all the levels of nervous action now described, may be known as Inhibitory Suggestions.
Thus, in sleeping dogs, after the spinal cord has been divided in the dorsal region, reflexes can be more easily evoked from the lumbar than from the cervical cord, because the former is freed from the inhibitory control of the brain. The strength of stimulus necessary to pass the threshold of consciousness and to produce an awakening has been measured in various ways.
The experiments which have been adduced prove that there are nerves whose function it is to control the general vital chemical actions, and that the governing centre of these nerves is situated above the medulla oblongata. To this centre, whose exact location is unknown, the name of the inhibitory heat-centre has been given.
But by either course the route is direct enough, and speedy enough to accomplish a vast amount of ruinous work. The influence of alcohol upon the heart and circulation is produced mainly through the nervous system. The inhibitory nerves, as we have seen, hold the heart in check, exercise a restraining control over it, very much as the reins control an active horse.
Soon, by some disarrangement of the inhibitory apparatus, the pneumogastric nerves, the heart loses its governor, and the beats increase to even 150 a minute, with irregular contractions, the blood being sent through the arteries with irregular force, as evidenced by the varying volume of the pulse.
It suggested also a curious question of psychology in regard to the inhibitory influence of horses and fish upon the human nerve of veracity. We named the place "Point Ananias."
To be sure the glass of beer in the evening paralyzes certain inhibitory centres of the brain and therefore puts the mind out of gear, but such a way of expressing it may easily be misleading, as it suggests too much that a real injury is done.
A very plausible one is, that the cardiac palsy is caused by energetic and persistent excitement of the inhibitory cardiac nerves. Strand is accredited with saying that agony of the mind produces rupture of the heart. It is quite common to hear the expression, "Died of a broken heart;" and, strange to say, in some cases postmortem examination has proved the actual truth of the saying.
In this way, by means of the inhibitory nervous system and of the accumulating fatigue products in the body, Nature forces the organism to rest and recuperate when the available supply of vital force runs low. The lower the level of vital force, the more powerful will become the inhibitory influences. Now we can understand why stimulation is produced by paralysis.
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