A text-book of physiology, for medical students and physicians . - region. Campbell callsattention to the fact that the extreme end of the frontal lobe(prefrontal region) has a comparatively undeveloped Fig. 101. Diagram to show the composition of the corpus callosum aa a system of com-missural fibers, without projection fibers.—(Cajal.) The Corpus Callosum.—The corpus callosum is the mustconspicuous of the bands of commissural fibers that connect onecerebral hemisphere with the other. Similar tracts of the samegeneral nature are the anterior commissure and the position
A text-book of physiology, for medical students and physicians . - region. Campbell callsattention to the fact that the extreme end of the frontal lobe(prefrontal region) has a comparatively undeveloped Fig. 101. Diagram to show the composition of the corpus callosum aa a system of com-missural fibers, without projection fibers.—(Cajal.) The Corpus Callosum.—The corpus callosum is the mustconspicuous of the bands of commissural fibers that connect onecerebral hemisphere with the other. Similar tracts of the samegeneral nature are the anterior commissure and the position and great development of the corpus callosum has made it I lie of e\ periinenl al as well as anatomical invest igat ion. When t he corpus is divided by a section along t heLongitudinal fissure (v. Koranyi) no perceptible effect of either amotor or sensory nature is observed in the animal. When it isstimulated electrically (Mott andSchafer) from above, symmetrical movements on the two sides of the body may be obtained. Ifthe motor cortex on one side is removed, stimulation in the lon-gitudinal fissure causes movements only on the side controlledby the uninjured cortex. These facts are in harmony
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