File:An American text-book of the diseases of children. Including special chapters on essential surgical subjects; orthopaedics, diseases of the eye, ear, nose, and throat; diseases of the skin; and on the (14592501170).jpg

Identifier: americantextbook1900star (find matches)
Title: An American text-book of the diseases of children. Including special chapters on essential surgical subjects; orthopaedics, diseases of the eye, ear, nose, and throat; diseases of the skin; and on the diet, hygiene, and general management of children
Year: 1900 (1900s)
Authors: Starr, Louis, 1849-1925 Westcott, Thompson S. (Thompson Seiser), 1862-1933
Subjects: Children Pediatrics Disease
Publisher: Philadelphia, W.B. Saunders
Contributing Library: Columbia University Libraries
Digitizing Sponsor: Open Knowledge Commons

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, though the primary discharge in these cases occurs from the ponto-bulbar level, the higher centres may also at the same time be implicated byintermediation of the ascending sensory fibres. For my own part, I see no 741 742 AMERICAN TEXT-BOOK OF DISEASES OF CHILDREN. reason why poisons, for instance, circulating in the blood may not dischargecortical centres simultaneously with ponto-bulbar centres. Whatever may bethe ultimate idea attained as to the different levels, the seat of the discharge inconvulsions is undoubtedly in the ganglion cells of the brain, and the moleculardisturbance in these cells necessary to the discharge is determined either bydirect irritation at these centres (from morbid states of the blood or vascularapparatus, trauma, neoplasms) or by indirect irritation (reflex). Isubmit a diagram of the two chief epileptogenetic centres. (Fig. 1). Thereis no form of eclampsia generated from the ganglion cells in the spinal cord. Fig. 1. Left Hemisphere. Bight Hemisphere.
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Muscles of trunk,arms and legs. Reflexes fromt^peripheral nerves and Showing, schematically, the two convulsive centres—one the cortical, the other the ponto-bulbar, andtheir relations and connections. They may be acted on directly by lesions of the centres themselves,or by vascular or blood states. They are more commonly acted upon reflexly by irritations conveyedalong sensory fibres from remote parts. Etiology.—Infants are always particularly liable to present the convulsivesymptom, because of the incomplete state of development of the nervous system.An infant is a bundle of nerves and nerve-centres and reflexes in a state ofgreat activity, prepared to receive, store up, and re-energize a worldful of new CONVULSIONS. 743 impressions suddenly thrust upon it. While the nervous system of the adulthas acquired the steadiness of long habit and has but to repair waste, that ofthe infant has all the delicacy and instability of newly-formed and highly-impressionable protoplasm, and, bes

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