. The treatment of disease : a manual of practical medicine . pital extremities of the brain and beginning at the upper end of theascending branch of the Sylvian fissure. 8l2 DISEASES OF THE NERVOUS SYSTEM. (b) The central region includes that portion of the cerebrum between theline described above and another, limiting the posterior central convolution,prolonged downward to the fissure of Sylvius. (c) The parietal lobe. (d) The occipital lobe. (e) The temporal or temporosphenoidal area.(/) The pons and medulla. (g) The cerebellum. 2. Localized spasms and epilepsy, withsensory aurse; local pal
. The treatment of disease : a manual of practical medicine . pital extremities of the brain and beginning at the upper end of theascending branch of the Sylvian fissure. 8l2 DISEASES OF THE NERVOUS SYSTEM. (b) The central region includes that portion of the cerebrum between theline described above and another, limiting the posterior central convolution,prolonged downward to the fissure of Sylvius. (c) The parietal lobe. (d) The occipital lobe. (e) The temporal or temporosphenoidal area.(/) The pons and medulla. (g) The cerebellum. 2. Localized spasms and epilepsy, withsensory aurse; local palsies, slight an-aesthesia, motor aphasia, agraphia. I. No symp-toms or men-tal t a b i li ty ,childishness,lack of powerof attention;later, motorspasms or pa-ralysis, anos-m i a, us siontenderness. Ascendinglimb of fis-sure ofSylvius. No symptoms or mus- cular anaesthesia, aprax- ^ ia, oculomotor (third nerve) symptoms, word blindness. With deep lesions, anaesthesia; if the lesion penetrates sufficiently deep,hemi-an- deaf-ness. Crossed paral-ysis of III, IVand limbs. 6. Crossed paraly-sis of Vand limbs. 7- Cerebellarataxia, vertigo,vomiting, forcedmovements, occi-pital headache: laterbulbar symptoms. 6. Crossed paralysisof tongue and limbs;bulbar palsy. Fig. II.—Showing focal symptoms of brain tumor—(after Dana.) Other situations not included above are: (Ji) The corpus callosum. (i) The basal ganglia and capsules. (;) The corpora quadrigemina and pineal gland. (k) The crura cerebri. (/) The base of the cerebrum. Tumors situated in the prefrontal area may cause no localizing symptoms,particularly if on the right side, and even general symptoms may be other instances the latter may be plainly evident, emotional disturbances,mental stupidity, and irritability being present in affections of either hemi-sphere. Aphasia may occur if the lesion involves the inferior frontal convo-1 TUMORS OF THE BRAIN AND ITS MEMBRANES. 813 lution
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