Table 2. Photobeam counts before and after instrumental extinction training.

Mean photobeam breaks (+/−SEM) gathered after the final day of instrumental training and immediately after extinction training the following day in riluzole- and fluoxetine-treated mice are shown. These values represent the raw data used to generate normalized counts represented in figures 2d and e. Control mice are collapsed into a single group. Note that only 60 μg/ml riluzole and fluoxetine appreciably increase photobeam counts after extinction training.

Group	Post-training photobeam counts (min. 45–60)	Post-extinction photobeam counts (min. 0–15)
saccharin control	1504.8 +/− 138.0	1591.1 +/− 256.0
6 μg/ml riluzole	1876.7 +/−291.2	998.5 +/− 304.8
30 μg/ml riluzole	1330.6 +/− 130.8	854.6 +/− 99.7
60 μg/ml riluzole	1282.0 +/− 108.3	1630.3 +/− 209.6
160 μg/ml fluoxetine	2017.3 +/− 179.1	3472.3 +/− 130.3