. A practical treatise on medical diagnosis for students and physicians . of movement, involving fre-quently the simultaneous contraction of several muscle-groups. It isnot known how sharp their limitation- are, but it i- supposed that the 326 EXAMINATION f the sEnvois system. central portion of the Incus is exclusively devoted to its (unction, whileat the periphery this Hides gradually into the surrounding centres. Themotor region for speech was discovered by Broca in L861. It occupies the posterior portion of the third frontal convolution and the lower partol* the ascending frontal convoluti
. A practical treatise on medical diagnosis for students and physicians . of movement, involving fre-quently the simultaneous contraction of several muscle-groups. It isnot known how sharp their limitation- are, but it i- supposed that the 326 EXAMINATION f the sEnvois system. central portion of the Incus is exclusively devoted to its (unction, whileat the periphery this Hides gradually into the surrounding centres. Themotor region for speech was discovered by Broca in L861. It occupies the posterior portion of the third frontal convolution and the lower partol* the ascending frontal convolution. The terminations of the sensoryneurons have not vet been conclusively determined. It seems likely thatsome of them terminate in the motor region, and others in the upper por-tion of the parietal lobe, it is probable that dillerent forms of sensationare represented by different areas upon the cortex, hut at present ourknowledge of this subject is uncertain. The anaesthetic areas producedby cerebral lesions have, in some cases, a characteristic Cortical centres and areas of representation on the mesial aspect of the hemicerehrum. (Mills.) They are found on the opposite side of the body, and on the limbs arebounded by horizontal lines at right angles to the long axis, the so-calledglove or stocking form of anaesthesia. Upon the trunk, the type of anaes-thesia must be determined by exclusion—that is, it corresponds neither tothe distribution of the cutaneous nerves nor to the segmental innervationof the cord ; it may, however, closely resemble the hysterical type. Thestereognostic sense appears to be situated in the parietal lobe—that is,lesions in this locality will cause its loss without disturbance of tactilesensation. As it has been shown that this sense is largely dependent uponmuscular and localization senses, it is likely that the fibres conveyingthese terminate in the parietal lobe. It is to be noted that although it isthe general rule that fibres fro
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