. Brain mechanisms and learning, a symposium. Psychophysiology; Learning, Psychology of. R. W. DOTY AND C. GIURGEA Table I INITIAL FAILURE OF DIFFERENTIATION IN DOG EPSILON 139 Stiiuiiliis location Total differentiation trials LFL CRs RFL 'CRs' R-CS, R-US L-CS, no US 50 44 14 for twelve sessions with results as shown in Table I. Obviously no differen- tiation occurred under these conditions; CRs were maintained to stimula- tion of cither area though the percentage of occurrence to R-CS may have Fig. 3 One of the first conditioned responses of Dog Epsilon to stimulation of right marg
. Brain mechanisms and learning, a symposium. Psychophysiology; Learning, Psychology of. R. W. DOTY AND C. GIURGEA Table I INITIAL FAILURE OF DIFFERENTIATION IN DOG EPSILON 139 Stiiuiiliis location Total differentiation trials LFL CRs RFL 'CRs' R-CS, R-US L-CS, no US 50 44 14 for twelve sessions with results as shown in Table I. Obviously no differen- tiation occurred under these conditions; CRs were maintained to stimula- tion of cither area though the percentage of occurrence to R-CS may have Fig. 3 One of the first conditioned responses of Dog Epsilon to stimulation of right marginal gyrus. At this time the CR is in the 'wrong' leg, but in subsequent trials the left foreleg, the one lifted to the US, lifted to this CS (Doty, 1959). It is characteristic of these animals (Giurgea, 1953 a, b) that just prior to the appearance of the first CRs and frequently thereafter, movements of the affected limb occur sporadically during the intertrial period. This phenomenon was observed in Dogs Beta and Epsilon. These movements. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Council for International Organizations of Medical Sciences; Fessard, A. (Alfred); Delafresnaye, J. F. (Jean Francisque), 1919-. Springfield, Ill. , Thomas
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