Cerebral localization in somaesthetic discrimination in the rat.

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Abstract
Blind rats were trained to discriminate Y-shaped alleys which differed in surface texture, one alley being rough, the other smooth. The animals readily learned the discrimination and relearned it after a 10-day period. 25 of the animals were tested again after lesions to different parts of the frontal lobes. Evidence was obtained which indicated that the retention of the habit was interfered with by frontal lobe lesions but no specific area within the frontal lobes could be detd. from the limited data afforded by the expt. Definite statements concerning the importance of the frontal lobe in somasthesis in general must await experimentation with other types of discrimination in which large numbers of crucial cases are studied.

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