The people's common sense medical adviser in plain English, or, Medicine simplified . s of these several organsare far from being determined: nor should this uncertainty sur-j)nse lis, when we reflect on the slow and devious process bywhich mankind lias arrived at some of the simplest ])hysiol()gicaltruths, and the ditHculties tliat environ all inquiiies into thenature of tlie organic functions. 175. W^e may here allude to the recent expenmental researcheswith reference to the functinirs of various portions of the brain,prosecuted by Dr. Ferrier, of England. Me ajjplied the electriccurrent to
The people's common sense medical adviser in plain English, or, Medicine simplified . s of these several organsare far from being determined: nor should this uncertainty sur-j)nse lis, when we reflect on the slow and devious process bywhich mankind lias arrived at some of the simplest ])hysiol()gicaltruths, and the ditHculties tliat environ all inquiiies into thenature of tlie organic functions. 175. W^e may here allude to the recent expenmental researcheswith reference to the functinirs of various portions of the brain,prosecuted by Dr. Ferrier, of England. Me ajjplied the electriccurrent to different ])arts of tlie cortical substance of the cerebrumin lower animals which had been rendered insensible by chloroform,and by it, could call forth muscular actions, expressive of ideasand emotions. Ihus, in a cat, tlie a)>plication of the electrodes atpoint 2 (Fig. 70), caused elevation of the shoulder and adductionof the limb, exactly as when a cat strikes a ball with its paw;at point 4, corrugation of the left eyo-brow, and the drawing 138 COMMON SENSE AtEOICAL inward and downward of the left ear; when applied at point 5, Et- ~/j the animal exhi- bited signs of pain,screamed, andkicked with bothhind legs espe-cially the left, atthe same timetnrned its headC around and lookedbehind in an as-tonished manner; Side view of brain of a Cat. A. Crucial sulcus dividing + i 1 f >Vi anterior convolutions. B. Fissure of Sylvius. C. Olfactory ^^ pomt b, ClUtcn- baib. ing movement of the left paw, with protrusion of the claws; at point 13, twitchingbackward of the left ear, and rotation of the head to the left andslightly upward, as if the animal were listening; at point 17,restlessness, opening of the mouth, and long-continued cries asif of rage or pain; at a point on the under side of the hemisphere,not shown in this figure, the animal started up, threw back itshead, opened its eyes widely, lashed its tail, panted, screamedand spit as if in fui-ious rage; and at po
Size: 2137px × 1170px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury180, bookdecade1870, booksubjectmedicine, bookyear1876
