. A practical treatise on medical diagnosis for students and physicians . Cutaneous nerves of the anterior surface of the arm. (Sahli.) customary to touch with the finger or a blunt object both sides of theface, the arms, the legs, and both sides of the body. If the patientdeclares that there is no diiFerence in the sensory perceptions, tactileanaesthesia may be temporarily excluded. The same regions are testedfor pain and temperature sense, and it is often desirable to test the musclesense at the same time, although this properly belongs to disturbances of 342 EXAMINATION OF THE NERVOUS SYSTE
. A practical treatise on medical diagnosis for students and physicians . Cutaneous nerves of the anterior surface of the arm. (Sahli.) customary to touch with the finger or a blunt object both sides of theface, the arms, the legs, and both sides of the body. If the patientdeclares that there is no diiFerence in the sensory perceptions, tactileanaesthesia may be temporarily excluded. The same regions are testedfor pain and temperature sense, and it is often desirable to test the musclesense at the same time, although this properly belongs to disturbances of 342 EXAMINATION OF THE NERVOUS SYSTEM. motility. It is often possible, in testing sensation, to decide whether thelesion is peripheral or central by its distribution. For this purpose it isusually most satisfactory to imagine the body placed upright upon theground with the arms and legs extending laterally at right angles to thetrunk. Sensory disturbances due to cerebral lesions will be bounded by Fig. N. cut. branch, ext. (fromthe N. musculocutaneus). N. nerves of the posterior surface of the arms. (Sahli.) lines parallel to the .spinal column—that is to say, there will either behemiansesthesia or ansesthesia of the limbs bounded by planes passingthrough them perpendicularly (the glove or stocking type). Sensory dis-turbances due to spinal lesions will be bounded by lines perpendicular to DISTUEBA^XmS OF MOTION. 343 the long: axis of the body—that is, liorizontal lines passing around thebody or extending from the shoulders or hips along the limbs, so that inthe spinal or segmental type of auitsthesia, the areas of disturbance formlong strips upon the limbs or belt-like bands around the body. Thesestatements are not, however, to be taken too absolutely, as the areas ofsensoiy disturbance are apt to be variable. (See Plate III.) If thelesion atfects the iieripheral nerves, the area or areas will correspond tothe cutaneous distribution of the nerve or nerves invol
Size: 1039px × 2405px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthormusserjo, bookcentury1900, bookdecade1900, bookyear1904
