. Physical researches on sensation [by] Frank Allen [and others]. 370 -390 •00217 4-927 461 •460 •00281 3-111 356 -415 •00220 4-960 455 •495 •00296 §-167 338 -445-520-550 -580-600•630•635•670•680 •00228•00250•00264•00275•00285•00300•00324•00370•00420 3-0043-1140-1613-2043-2333-2763-3143-3943-456 439400379364351333309270238 resulted from stimulation with quinine. The curves are all elevatedabove the normals, which indicates fatigue, or, more properly, depressionof sensitiveness of the receptor organs of each taste sensation. Thecurve for the salt sensation 6 does not extend the full length, no
. Physical researches on sensation [by] Frank Allen [and others]. 370 -390 •00217 4-927 461 •460 •00281 3-111 356 -415 •00220 4-960 455 •495 •00296 §-167 338 -445-520-550 -580-600•630•635•670•680 •00228•00250•00264•00275•00285•00300•00324•00370•00420 3-0043-1140-1613-2043-2333-2763-3143-3943-456 439400379364351333309270238 resulted from stimulation with quinine. The curves are all elevatedabove the normals, which indicates fatigue, or, more properly, depressionof sensitiveness of the receptor organs of each taste sensation. Thecurve for the salt sensation 6 does not extend the full length, no readingshaving been recorded in the upper portion. From this figure the conclusion may be drawn that stimulation withquinine of the strength used depresses all four gustatory sensations to The Gustatory St-nsory Reflex 401 an apparently equal extent. It is also to be inferred that the sensationsare not independent (jf eaeh other. The sour stimulus usetl was a \\ jier cent, solution of acetic 0040 - 0035 0030 0025 0020 0015. 02 03 0 4 05 06 Fui. 0.—DiixKit iictiun of hitler stiinuluH. acid. This was applieil directly in the same manner as readings are given in Table and the corresponding curves are intig. 7. Tiiis shows that the salt. sour, and bitter RHcptors are depressedin sensitiveness, while the sweet sensation is enhanced. This is proved 402 Allen and Weinberg by the curve a falling below the corresponding normal A. It may beremarked that the curve c represents thirty individual readings, and thecurve b only fourteen. As before remarked, the selection of curves ortastes for any measurement cannot be predetermined. The results areobtained apparently only by chance. In this case the distribution offorty-four readings occurred as stated. This quite conclusively identi-fies c as the depressed curve for the sour taste. It is quite possible, Table IV.—Stimxtlation with 1-5 per cent. Solution of Acetic Acid. Volt Durat
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