*2.4.2.1 Beam walking*

The beam walking assesses fine motor coordination and balance [17]. This test examines the ability of the mice to remain upright and to walk on an elevated and relatively narrow beam [17]. The beam has a length of 120 cm, a width of 0.6 cm and is suspended about 60 above some foam pads. The beam is marked at 5 cm and 1 cm intervals. It is composed of wood and is coated with black paint. The mouse was placed on one end of the beam. The trial was started after the mouse has secured its grip on the beam and lasted for approximately 5 min. The tests were videotaped for scoring. The parameters scored included the number of foot slips and falls.
