Organic and functional nervous diseases; a text-book of neurology . of smell and taste which are undoubtedly storedin the cortex of the uncinate gyrus and which go to make up the con-cepts of objects which possess odor and flavor. We have no record ofcases of psychical anosmia, though such symptoms are perfectly possible. Disturbance of Thought and in the Use of Language. — Thus far thesymptoms produced by a lesion in one functional area of the cortex orin the tract leading to it, or from it through the brain have been con-sidered, and also the possible combinations of these symptoms whenadjac
Organic and functional nervous diseases; a text-book of neurology . of smell and taste which are undoubtedly storedin the cortex of the uncinate gyrus and which go to make up the con-cepts of objects which possess odor and flavor. We have no record ofcases of psychical anosmia, though such symptoms are perfectly possible. Disturbance of Thought and in the Use of Language. — Thus far thesymptoms produced by a lesion in one functional area of the cortex orin the tract leading to it, or from it through the brain have been con-sidered, and also the possible combinations of these symptoms whenadjacent areas or tracts are involved together. But while the corticalareas liave undoubtedly distinct functions, it is not to be forgotten thatthey are closely joined to one another by means of the multitude ofassociation fibres and commissural fibres which go to make up thelarger part of the white matter of the centrum ovale. It can be shown by careful dissection that each convolution is joinedto the two adjacent convolutions by fibres which pass around the separ-. The association fibres. A, between adjacent convolutions; B, between frontal and occipital areas ;C, between frontal and temporal areas, cingulum; D, between frontal and temporal areas, fasciculusuucinatus; E, between occipital and temporal areas, fasciculus longitudinalis inferior; CN, caudatenucleus ; OT, optic thalamus. ating fissures. (Fig. 70.) Also, that bundles of fibres exist whichpass from each convolution to the convolution next but one, and so , it may be stated that each convolution has a possible connec-tion with every other. Besides this association of convolutions bysmall bundles of fibres, it is possible to find a distinct set of associa-tion tracts which pass between more or less distant regions. Onesuch tract passes from the frontal lobe, collecting its bundles from allthree convolutions, backward to the occipital lobe. Another tractjoins the occipital with the anterior part of the temporal l
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectnervoussystem, bookye
