The Journal of laboratory and clinical medicine . orking of special muscle groups, it is reasonable to suppose that an un-paired center will prove sufficient for the coordination of muscle groups whichare necessarily synergic in action. In the case of muscular areas capable of andaccustomed to dysynergic action, a paired coordination center must be , inasmuch as the limbs are frequently required to act in harmoniouscoordination one with the other (as for example in walking), an additional un-paired center becomes necessary in their case for synergic coordination. Working upon
The Journal of laboratory and clinical medicine . orking of special muscle groups, it is reasonable to suppose that an un-paired center will prove sufficient for the coordination of muscle groups whichare necessarily synergic in action. In the case of muscular areas capable of andaccustomed to dysynergic action, a paired coordination center must be , inasmuch as the limbs are frequently required to act in harmoniouscoordination one with the other (as for example in walking), an additional un-paired center becomes necessary in their case for synergic coordination. Working upon the above hypothesis, Bolk successfully demonstrated a def-inite correspondence between the variations in the development of certain cere-bellar lobules and the functional importance of certain muscle groups. For further details, reference should be made to this authors following is a brief synopsis of Bolks deductions: The cerebellar cortex is composed of a number of coordination centerssome of which are paired and some Fig. 3.—Schema of the jiarts of the mammalian cerebeUum spread out in 6ne plane. (After BolkIjy Van Rijnberk from Luiciani. Op. cit.) On the right side of the ligure the relation of the differentlobules to the functional development of the musculature is indicated according to the theory of Bolknoted in the text. The lobus anterior ccrcbcUi contains the coordination centers for the nmsclegroups of the head (eyes, tongue, muscles of mastication, muscles of expression)and also those of the larynx and pharynx. The lobnlus simplex contains the coordination centers fur the muscles ofthe neck. The upper part of the lobnlus niedianus posterior contains the unpaired cen-ters (centers for synergic movement) for the left and right extremities. In each of the lobuli ansifornies el paramediani are situated tlie pairedcenters for the extremities—the arrangement of the centers in each case beinghomolateral. In the remainder of the cercl)ellum th
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Keywords: ., bookcentury1900, bookdecade1910, booksubject, booksubjectmedicine
