. Comparative physiology of the brain and comparative psychology. Brain; Psychology, Comparative. EXPERIMENTS ON MED US^E. FIG. 7. LOCALISING REFLEX IN TIAROPSIS INDICANS. " central nervous system" has only a conventional significance. Romanes found that if we stimulate a o spot a (Fig. 7) on the concave side of the umbrella of a Tiaropsis indicans with a needle, the manubrium is brought to the stimulated spot (Fig. 7), as though the animal wished to remove the stimulating object (2). This move- ment takes place as follows: A bending of the manubrium as T If the point a on the margin
. Comparative physiology of the brain and comparative psychology. Brain; Psychology, Comparative. EXPERIMENTS ON MED US^E. FIG. 7. LOCALISING REFLEX IN TIAROPSIS INDICANS. " central nervous system" has only a conventional significance. Romanes found that if we stimulate a o spot a (Fig. 7) on the concave side of the umbrella of a Tiaropsis indicans with a needle, the manubrium is brought to the stimulated spot (Fig. 7), as though the animal wished to remove the stimulating object (2). This move- ment takes place as follows: A bending of the manubrium as T If the point a on the margin is stimulated, the Well as Of the bell manubrium is brought to the stimulated spot, ensues in that mer- somewhat as a decapitated frog tries to wipe off . a drop of acetic acid with its foot. idian of the um- brella which passes through the stimulated point a. It seems as though all the muscle-fibres cooperated in bringing the manubrium to the stimulated spot. The central nervous system has nothing to do with this reaction, for Romanes found that it continued after excision of the whole margin with the nerve- ring. On the other hand, if we make an incision in the umbrella parallel to the margin and stimulate a spot below the line of incision, movements of the manubrium, although not pronounced ones, ap- pear in the direction of the quadrant where the stimulated spot is located, but an exact localisation. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Loeb, Jacques, 1859-1924. New York, G. P. Putman's Sons; [etc. , etc. ]
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