Development of learning and memory of -maze training in neonatal mice.

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Abstract
Presented 25 trials in a shock-escape maze to 90 Swiss-Webster mice at 9, 11, or 13 days of age. One-half of the Ss at each age were trained to the goal opposite their 1st-trial choice, while the other 1/2 served as yoked controls. 24 hr. later, the trained groups received 25 additional trials to the previous goal. The yoked groups and groups without prior exposure were trained to the goal opposite their 1st-trial choice. 9-day-old Ss trained to a specific goal showed some improvement in performance during original training, while the 11- and 13-day-old groups demonstrated substantial improvement. On retention tests, 9-day-old Ss trained to the same goal on both days did not differ from either control group, but 11- and 13-day-old trained Ss were reliably better than either control group. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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