. Brain mechanisms and learning, a symposium. Psychophysiology; Learning, Psychology of. 57^ BRAIN MECHANISMS AND LEARNING A clear example of locomotor disinhibition after large prefrontal lesions was also found by Shumilina (1949) in Anokhin's laboratory in experiments in wliich the animal received food at two ends of the stand to two different CSs. To summarize, we think that, to use convenient expressions introduced by Rosvold and Mishkin, prefrontal lesions may produce either relatively pure drive disinhibition, when the extent of the lesion is limited to the frontal poles, or, in addition
. Brain mechanisms and learning, a symposium. Psychophysiology; Learning, Psychology of. 57^ BRAIN MECHANISMS AND LEARNING A clear example of locomotor disinhibition after large prefrontal lesions was also found by Shumilina (1949) in Anokhin's laboratory in experiments in wliich the animal received food at two ends of the stand to two different CSs. To summarize, we think that, to use convenient expressions introduced by Rosvold and Mishkin, prefrontal lesions may produce either relatively pure drive disinhibition, when the extent of the lesion is limited to the frontal poles, or, in addition, motor-response disinhibition when the lesion encroaches upon the pericruciate area. It remains to be elucidated whether or not it would be possible also to obtain pure motor-response disinhibition (without drive disinhibition) if only the pericruciate area were to be removed. As to the mechanism ot motor-response disinhibition it should also be considered as some release phenomenon, analogous to many forms of hypcrmotility produced by various subcortical lesions. ucs ucs cs». ^•R CS». 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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