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Updated: September 3, 2025
Conscious and unconscious imitation or repetition of every sort of copy may also help to establish the immediate and low-level connection between afferent and efferent processes that brings the organism into direct rapport and harmony with the whole world of sense.
The second emphasizes the importance of the wave form of attention in all mental work, the superiority of efferent to afferent response as an educational process, and the acquirement of mastery by a transfer of control from higher to lower mental levels.
*Voluntary Action Pathways* differ in but one essential respect from those of reflex action. This is necessary in order that the mind may control the action. From all portions of the body surface, afferent pathways may be traced to the cerebrum; and from the cerebrum efferent pathways extend to all the voluntary organs.
Then we discover, strangely enough, that though those messages of the afferent nerves cease to have any effect upon the subject, the imaginings of the subject carried back along outgoing lines produce the most unexpected results in physical states.
It irks them to occupy themselves with purely mental processes, so enslaved are they by what is near and personal, and thus they are impoverished in the best elements of language. It is as if what are sometimes called the associative fibers, both ends of which are in the brain, were dwarfed in comparison with the afferent and efferent fibers that mediate sense and motion.
When electrolysis is employed, it should be directed towards the afferent vessels; and if it fails to arrest the flow through these, it is useless to persist with it. In some cases ligation of the afferent vessels has been successful. #Arterial Angioma# or #Cirsoid Aneurysm#. This is composed of the enlarged branches of an arterial trunk.
Lymphangiomas are met with in the abdomen in the form of omental cysts. #Lymphadenitis.# Inflammation of lymph glands results from the advent of an irritant, usually bacterial or toxic, brought to the glands by the afferent lymph vessels. These vessels may share in the inflammation and be the seat of lymphangitis, or they may show no evidence of the passage of the noxa.
Foreign substances, bacteria and their products, inorganic material and in fact, anything that is introduced into the tissues, if soluble or miscible, will be taken up and conveyed by the afferent lymph vessels and disseminated throughout the system hence the constitutional disturbances so frequently thus caused.
The morbid condition which generates them is also produced by debility, by anæmia, and the senile decay of the cerebral organs, since they occur in dementia, idiocy, and old age, and the physiological and mental causes are the same; the power of fixing the attention and governing the thoughts is diminished, owing to the weakening of the vivid consciousness of the external world, produced by a torpidity of the afferent organs.
We have here to fall back upon facts rather than upon a definite knowledge of what happens in the shadowy border-land across which the mind takes over and organizes and acts upon what is presented to it by the afferent nervous system.
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