Figure 1.
The DSWS test consisted of a training and a test phase separated by a delay that was either 30 seconds or 15 minutes long.
Table 1.
Measures assessed during the habituation phase.
Figure 2.
The total time needed to complete a trial included both the training and the test phase. Data are averaged across three consecutive trials and presented separately for the four experimental groups as means ± standard error of the mean.
Figure 3.
The overall memory score was calculated on the basis of both the training and the test phase. Data are presented separately for the four experimental groups as means ± standard error of the mean, **p<0.01.
Figure 4.
The memory score was based on correct and incorrect arm entries during the test phase only. Data are presented separately for the four experimental groups as means ± standard error of the mean.
Figure 5.
The examples of sigmoidal curves are based on the rats’ individual memory performance. Different types of learning curves were observed, ranging from gradual (A, B) to steep learning curves (C, D). Two exceptional cases were observed with one rat falling off in memory performance between trial 14 and trial 15 (E), and another one leveling off at a negative plateau value of −0.34 (F).
Figure 6.
(A) The amplitude and (B) learning maximum were calculated on the basis of individual learning curves. Data are presented separately for the four experimental groups as means ± standard error of the mean, *p<0.05.