Figure 2.

Time course of memory. Data from Fig. 2 for all values measured during a test were normalized and expressed a percentage of the value in the same animal during the initial training, to illustrate the time course of short- and long-term memory more clearly. The time periods during which short-, intermediate- (Fig. 5, see below), and long-term memories are expressed are noted. s.e.s are shown. All tests were run along with blind controls. Also shown are the mean and s.e.s of the combined value for all of the controls (broken lines), expressed as a percentage of the mean value observed in all of the animals during the initial training.