An American text-book of physiology . Fig. 182.—Lateral view of a human hemisphere. The cortical visual area on this aspect is shaded (V). the pathways from the special sense-organs, it is found that the visual areaalone exhibits any elaboration when examined by the method of stimulation. ^Arehiv fur Anatomie und Physiologic, 1870. 684 AN AMERICAN TEXT-BOOK OF Fig. 183.—Mesial view of a human hemisphere. The corti-cal visual area is shaded, ),• cortical area for smell, S. To be sure, Ferrier very early pointed out tliat stimulation of the other sen-sory areas causes movements. It
An American text-book of physiology . Fig. 182.—Lateral view of a human hemisphere. The cortical visual area on this aspect is shaded (V). the pathways from the special sense-organs, it is found that the visual areaalone exhibits any elaboration when examined by the method of stimulation. ^Arehiv fur Anatomie und Physiologic, 1870. 684 AN AMERICAN TEXT-BOOK OF Fig. 183.—Mesial view of a human hemisphere. The corti-cal visual area is shaded, ),• cortical area for smell, S. To be sure, Ferrier very early pointed out tliat stimulation of the other sen-sory areas causes movements. It was by means of the movements tiius ob-tained that he sought to localize the sensory centres, assuming that the move-ments were in response to sensations caused by the irritation of the the result of stimulation of a sensory area tlie muscles of the sense organ itself or those immediatelyassociated with it respond (see , 183). Shiifer^has shown in the mon-key that the dorsal portion of thevisual area is associated with theupper portion of the retina, theeye being turned downward as theresult of stimulating this is interpreted as a movementof the eye intended to bring astimulus falling on the upper part of the retina into the centre of the field ofvision. When the stimulus is applied to the ventral portion of the area acorrespondin
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