Experimental Studies on Adversive Movement

Adversive movement was first reported in 1870 by Fritsch and Hitzig when they said that when gyrus Sylvii was stimulated electrically the eyes moved to the opposite side of the stimulation. Vogt and Foerster made a detailed report on adversive movement, which is a rotary motion of the head, trunk and both eyes. But in their report, they did not make it clear what tracts the stimulation took. Mitsueda, who iS under Hayashi, defined the cortical area of the eye balls and the eye lids. He reported that they were of the extrapyramidal kind. Russel reported that when the cerebellum was stimulated the eye balls moved to the side of the stimulation, but did not say anything about adveraive movements which concerned the movement of the head and the trunk. Therefore, to ascertain the center of adversive movement and its tract the following experiments were performed. For stimulation electrical ones and chemical ones using metrazol (cardiazol) were used. As Ishizuka, who is under Hayashi, has proved excitement is only seen when cardiazol is injected among the nerve cells at a certain concentration, and it is not seen when injected among the nerve fibres.