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The Delayed Response task is the best-established marker of frontal lobe function in nonhuman primates. This article reports the developmental progression of human infants on that task. It is proposed that maturation of prefrontal cortex may make possible these age-related improvements in Delayed Response performance. This would suggest the importance of(More)
Rats with prefrontal cortex (PFC) lesions or sham operations were tested for acquisition and reversal learning with tactile-visual stimuli. PFC rats performed extremely poorly during acquisition and also differed from control rats in reversal learning. Both higher-order processing and subtle motoric dysfunctions may have combined to account for the marked(More)
For decades, pediatricians assiduously documented "soft neurologic signs" in children referred for school learning difficulties, although pediatric neurologists, including Charles F. Barlow, pointed out the dissociation between most neuropsychological abnormalities and the motor findings in question. Later, large epidemiologic studies confirmed the(More)
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