. Elements of physiological psychology; a treatise of the activities and nature of the mind, from the physical and experimental points of view . a t *^;*.*.:- ^??^ FiQ. 120.—Arrangement of Pressure-spots (Goldscheider). A, dorsal and radial surface ofthe first phalanx of the index finger; B, membrane between thumb and index finger; C,dorsal surface of forearm; D, back; B, inner surface of forearm; F, back of hand. touch-spots (see Fig. 121). Exploration with a warm cone bringsout, though with more difficulty, the existence of another series ofspots specifically sensitive to warmth; and explora
. Elements of physiological psychology; a treatise of the activities and nature of the mind, from the physical and experimental points of view . a t *^;*.*.:- ^??^ FiQ. 120.—Arrangement of Pressure-spots (Goldscheider). A, dorsal and radial surface ofthe first phalanx of the index finger; B, membrane between thumb and index finger; C,dorsal surface of forearm; D, back; B, inner surface of forearm; F, back of hand. touch-spots (see Fig. 121). Exploration with a warm cone bringsout, though with more difficulty, the existence of another series ofspots specifically sensitive to warmth; and exploration with a fine-pointed needle or stiff bristle reveals numerous spots which give asharp, minute, pricking sensation. The pressure needed to excitethese pain-spots is much greater than that needed for the touch-spots. The skin thus resembles a mosaic of differently sensitized spots;it differs from a mosaic in this, however, that there are insensitivespots between those which are sensitive. No great care is requiredto convince oneself of the general truth of these observations; but,on the other hand, great care is necessary to reach
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Keywords: ., boo, bookcentury1900, bookdecade1910, booksubjectpsychophysiology
