A text-book of physiology for medical students and physicians . Fig. 100.—Lateral surfaces of the brain, showing the primordial and marginal zones. —(FlechsigJ). f ?-?? Fig. 101.—Same areas on the mesial surface.—(Flechsig.) SENSE AREAS AND SENSE ASSOCIATIONS. 227 It is injuries in these centers which may be supposed to producethe various kinds of aphasia described above. Thus, areas 17, 20,and 24 form border areas to the primary area of sight (5); 16 hasthe same relation to 2, 18 to 2h, and 14, ub with 7. Later stillthe great association areas—34, 35, 36, Figs. 100 and 101—acquiretheir myelin
A text-book of physiology for medical students and physicians . Fig. 100.—Lateral surfaces of the brain, showing the primordial and marginal zones. —(FlechsigJ). f ?-?? Fig. 101.—Same areas on the mesial surface.—(Flechsig.) SENSE AREAS AND SENSE ASSOCIATIONS. 227 It is injuries in these centers which may be supposed to producethe various kinds of aphasia described above. Thus, areas 17, 20,and 24 form border areas to the primary area of sight (5); 16 hasthe same relation to 2, 18 to 2h, and 14, ub with 7. Later stillthe great association areas—34, 35, 36, Figs. 100 and 101—acquiretheir myelinated fibers. These latter centers, as indicated above, maybe considered as association areas with more complex connec-tions, and they serve to mediate, therefore, the higher psychicalactivities. Flechsig, in his report, designates these areas from ananatomical point of view as terminal or central zones. As theresult of his histological work, as far as it has progressed, he distin-guishes thirty-six areas in the cortex in which the myelinization ofthe fibers occurs separately, and in which, therefore, by inferencedifferent physiological activit
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