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Development of 24 hour retention of escape learning in neonatal C3H mice
Author(s) -
Nagy Z. Michael,
Misanin James R.,
Olsen Peter L.
Publication year - 1972
Publication title -
developmental psychobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.055
H-Index - 93
eISSN - 1098-2302
pISSN - 0012-1630
DOI - 10.1002/dev.420050310
Subject(s) - psychology , session (web analytics) , physiology , audiology , developmental psychology , medicine , world wide web , computer science
The development of 24‐hr memory of an escape response in neonatal C3H mice was examined in 2 experiments. In experiment 1, separate groups of mice received 25 trials of escape training for 3 consecutive days (24 hour Inter‐session‐interval) beginning at 5, 7, and 9 days of age. Several different measures demonstrated witin‐session improvement for all ages on all test days. However, between‐session improvement which was not due to maturation did not occur until after 9 days of age. In experiment 2, separate groups of mice received 25 escape training trials at either 8 or 10 days of age, and were retested 24 hrs later. Comparisons of the retest scores with original training scores as well as with littermate controls without prior training experience, showed that 8‐day old mice failed to show retention effects of prior training, whereas 10‐day old mice performed better on the retention test than they had on original training, as well as better than controls without previous training. The results suggest that 24‐hr memory of the escape task develops at 9–10 days of age in the C3H mouse.