An American text-book of physiology . mportant because the cerebrum contains the pathway for the impulsesfrom the olfactory bulbs to the cell-groups which control the cord. Passing next to the amphibia as represented by the frog, there are sevemlseries of observations on the physiological value of the divisions of the centralsystem. Schrader^ finds the following: Removal of the cerebral hemispheresonly^ the optic thalami being uninjured, does not abolish the spontaneous activ-ity of the frog. It jumps on the land or swims in the water, and changes fromone to the other without special stimulati
An American text-book of physiology . mportant because the cerebrum contains the pathway for the impulsesfrom the olfactory bulbs to the cell-groups which control the cord. Passing next to the amphibia as represented by the frog, there are sevemlseries of observations on the physiological value of the divisions of the centralsystem. Schrader^ finds the following: Removal of the cerebral hemispheresonly^ the optic thalami being uninjured, does not abolish the spontaneous activ-ity of the frog. It jumps on the land or swims in the water, and changes fromone to the other without special stimulation. It hibernates like a normal frog,retains its sexual instincts, and can feed by catching passing , such as flies Steiner : Die Funclionen der Centralnervensystems, 1888. ^ Steiner, loc nt. Archiv fur die gesammte Physiologic, 1887, Bd. xli. CENTRAL A Eli VO US SYSTEM. 707 (see Fig. 201). A frog without its hemispheres is therefore capable of doingseveral things apparently in a spontaneous way. Such frogs balance themselves.
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