Abstract
In 1924, Dusser de Barenne 1 described a rather large area of the brain of Macacus, any small part of which, when poisoned by strychnine, caused changes in sensation in the heterolateral and in the ipsolateral sides of the body. In an endeavor to find some anatomic basis for this physiologic fact, at the suggestion of Professor A. Jakob I operated on a series of monkeys' brains and studied the degeneration caused by small cortical excisions within this area. Although Dusser de Barenne's work had been done on Macacus, I selected Cercopithecus, the brain of which is morphologically almost similar to that of Macacus, because this species of monkey was considerably cheaper in Hamburg at the time the work was done. The sensory field of Dusser de Barenne corresponds exactly with areas 1 to 3, 4, 5, 6 and 7 of Brodmann, 2 except the medial surface of the hemispheres,
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