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. Author manuscript; available in PMC: 2010 Jun 1.
Published in final edited form as: Neurobiol Aging. 2008 Oct 23;31(6):1032–1043. doi: 10.1016/j.neurobiolaging.2008.09.002

Fig. 3.

Fig. 3

Mean total percentage of CRs in rabbits selected as the best (“good learner”) and worst (“poor learner”) performers in 600 or 750 ms trace eyeblink classical conditioning. A total of 18 4-month old and 18 27-month good learner rabbits were compared to 18 each of 4- and 27-month poor learner rabbits treated with vehicle, 3.0 mg/kg galantamine, or 1.0 mg/kg MEM-3389. There were highly significant differences between good and poor learners as well as significant age and drug effects. Single asterisks over each good learner group indicate statistically significant differences between good and poor learners. The bar with an asterisk over galantamine and MEM-3389 groups of young rabbits indicates statistically significant differences between vehicle- and drug-treated good learners. Asterisks over the bar over all young rabbits indicate significant differences between 4- and 27-month rabbits. *p < 0.05; ***p < 0.001.