Page:Popular Science Monthly Volume 37.djvu/539

This page has been proofread, but needs to be validated.
523
CENTERS OF IDEATION IN THE BRAIN.

Résumé: "After destruction of the angular gyrus the animal commences to feel about cautiously; if pushed to move, it runs against every obstacle on its way. If put on the floor, it cries out and looks about quite frightened. If called, it points its ears and cries. If taken up again, it clings to one as if afraid of being put down. On the other hand, threatening with the stick has no effect unless the stick is brought in contact with the eyes."

Munk (Functionen der Grosshirnrinde, page 25 etc.) makes the same observations as Ferrier, only his region of destruction, marked A1 (Fig. 4), includes a portion of brain where Gall located PSM V37 D539 Area controlling social attachment and emotion of fear.jpgFig. 4.—Diagram. (Hermann Munk.) Extirpation of area marked A1 causing loss of social attachment, and of the emotion of fear. his organ of "friendship" or "attachment" (f, Fig. 2); and Munk, speaking of the effect, says: "However, the animal remains cold at the sight of men, whom it used to greet most friendly, and even at the sight of dogs, with whom it used to play"; an effect which can be easily explained on phrenological principles by the loss of the organ of "attachment" or "friendship." He goes on to remark that the whip, which formerly frightened the animal away to a corner, has now no effect. The animal stops before every obstacle on its path and turns back again; one has to push it to go up any steps, and then it feels its way with its nose, though not blind. When recovering, it stares at everything and examines every object most cautiously, both when lying down and walking about, just as if it had to learn afresh and gain new experience.

Goltz (Verrichtungen des Grosshirns, page 18, etc.) says it is a well-known fact that animals are easily put into rage by the appearance of a person in strange costume. He got his servant dressed up in fantastic attire, and his dog would have torn him to pieces had not proper precautions been taken. When the dog, however, had been operated upon, and the experiment was repeated, he remained perfectly calm, even when the servant stepped quite close to him, though the animal was by no means blind:

It is not difficult to detect in all these experiments an affection of some faculty which, when excited, causes timidity. What the