Figure 5: Percents of time spent in each quadrant in probe trials. After five daysí acquisition trial, probe trial was performed to determine how well each group mice had learned and consolidated the platform location. In probe trial, platform, which is original in SE quadrant, was removed. Percents of time spent in each quadrant (NE, NW, SW and SE) were calculated, in which the percent of time spent in original target quadrant indicates the degree of memory consolidation that has taken place after learning.