Figure 2. Aged mice show normal object recognition.

a) Diagram illustrating the experimental design for object recognition. Animals were familiarized to the training context 10 minutes per day for 3 days prior to training. On the 4^th day, 2 identical objects were introduced for 10 minutes. 24 hours later the animals were tested for object recognition by replacing one of the familiar objects with a novel object. b) Bar graphs showing the percent preference for the novel object in young (n=16) and old (n=15) animals. Dotted line denotes 50% (chance) preference. * p<0.05.