A system of practical medicine . ; Jl, ascending parietal convolution ;7\., [ireciineus; Oo, cuneus; Po, i)arieto-occi|iital lissure; o, sulcus-occipitalis transversus; ur,calcarine fissure ;oc, suj)erior ; oc, inferior ramus (jf the same ; /, gyrus descendens ; J^, gyrusoccipito-temporalis lateralis (lobulus fusiformis); 75, gyrus occipito-temporalis medialis (lob-ulus lingualis); r/, collateral or occipito-temporal fissure. island of Roil, itself composed of several small convolutions. Theparieto-occipital fissure which forms the anterior boundary of the occip- COR TWA L LO CA LIZA TION. 295
A system of practical medicine . ; Jl, ascending parietal convolution ;7\., [ireciineus; Oo, cuneus; Po, i)arieto-occi|iital lissure; o, sulcus-occipitalis transversus; ur,calcarine fissure ;oc, suj)erior ; oc, inferior ramus (jf the same ; /, gyrus descendens ; J^, gyrusoccipito-temporalis lateralis (lobulus fusiformis); 75, gyrus occipito-temporalis medialis (lob-ulus lingualis); r/, collateral or occipito-temporal fissure. island of Roil, itself composed of several small convolutions. Theparieto-occipital fissure which forms the anterior boundary of the occip- COR TWA L LO CA LIZA TION. 295 ital lobe extends but a slight distance on the lateral surface of thebrain, so that the convolutions of the temporal and parietal regions areapparently continuous with those of the occipital lobe. Cortical Localization. Few of the lesions produced by disease are strictly limited to thecortex, and those of an experimental character often involve the sub-cortical region. Even when electricity is employed to stimulate the Fig. View of the brain frnm below : F^, first frontal convolution or gyrus rectus ; Fo, middle or secondfrontal convolution : F^, inferior or third frontal convolution; /,, sulcus olfactorius: /s, sulcusorbitalis; Js, third or inferior temporo-sphenoidal convolution; Tj, gyrus occipito-temporalislateralis (lobulus fusiformis); 75, gyrus occipito-temporalis medialis (lobulus linguahs); ^4,sulcus occipito-temporalis inferior; V3, sulcus temporo-sphenoidalis inferior or third temporalfissure ; po, parieto-occipital fissure ; oc, calcarine fissure ; U, gyrus uncinatus ; ch, optic chiasma ;cc, corpora albicantia; KK, crura cerebri (lettering according to Ecker). cortex, it is impossible to limit the effects of the current to the gray in trying to distinguish betweenand destruction, and the phenom-white substance immediately be-]50ssible that we should soon beeliable information regarding the matter. If greater care were usedthe results of purely cortical irritat
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Keywords: ., bookcentury1800, bookdecade1890, bookpublish, booksubjectmedicine
