Spontaneous Alternation (Y-Maze).

<p><b>A)</b> Scopolamine-injected mice (SCP) and control (Ctrl) mice showed the same level of spontaneous alternation (n = 9-10/group). <b>B)</b> Scopolamine-treated mice had significantly more arm entries than control mice. <b>C)</b> 129S6/Tg2576 mice and WT mice performed showed the same level of spontaneous alternation (n = 16-19/group). <b>D)</b> The number of total arm entries between WT and 129S6/Tg2576 mice was not statistically different. Mice with less than 8 arm entries were excluded from the alternation analysis. Data are mean ± SEM; **<i>p</i> < 0.01 (Student’s <i>t</i>-test).