Figure 3.
Exploratory behaviour during the test trial. (A) Total time of exploration (duration in seconds), by the different groups (young individuals (Orange filled circle); old (purple filled square)) of the different objects (‘old’ stationary, ‘recent’ stationary, ‘old’ displaced and ‘recent’ displaced) during the test trial. Individual values are shown. The horizontal black line represents the group median (*P < 0.05, **P < 0.01, ***P < 0.001, ns: not significant). (B) Individual values for total duration (in seconds) of exploration of the different objects (‘old’ stationary, ‘recent’ stationary, ‘old’ displaced and ‘recent’ displaced) during the test trial. Straight lines represent the robust linear regressions.