*4.4. Passive Avoidance Task (PAT)*

A passive avoidance task was performed after 21 days of the treatment with Bean-PS. A test chamber was composed of two platforms, one light (white partition, 20 cm × 20 cm × 30 cm) and the other dark (black partition, 20 cm × 20 cm × 30 cm). A guillotine door opening (6 cm × 6 cm) was made on the floor in the center of the divider between the two partitions. Stainless steel bars, of diameter approximately 5 mm, were spaced at about 1 cm apart. Electric shocks (5 V, 0.5 mA, 10 s) were transferred to the grid on the floor of the dark compartment. All rats were again located on the platform, and the escape latency was recorded in the retention test.
