2.5. Y maze test

The Y‐maze is an apparatus with three equal identical black Plexiglas arms (40 × 4.5 × 12 cm, 120° apart), and each arm has a movable partition at the center of the maze. Three arms are randomly distributed into novel arm, a start arm, and another arm. The test contains two phases. First, 10 min after scopolamine injection, mice were placed in the start arm with 3 min free exploring time and one arm blocked. One hour later, mice were free to explore the entire maze for 3 min with the baffle removed. The time and distance in novel arm were recorded and analyzed (Shanghai transfer information technology CO., LTD).