The Rodent Tilt Apparatus is a rectangular acrylic box, measuring 36 x 12 x 12 inches. Each end piece of the box has a central hole with a diameter of 1½ inches. Positioned above these holes are 2½ inch tin cans, open at both ends, extending ½ inch into the chamber through an additional opening. One can functions as the entrance tube, while the other serves as the exit tube.

Adjacent to the box, two platforms are set up: one as the starting platform and the other as the feeding platform, which also acts as the goal box. The feeding platform is enclosed on three sides by upright cardboard walls. The end panels of the box feature diagonal paint schemes: the triangles formed with the base along the bottom of the box are painted black, while the triangles continuous with the sides are painted white. A 4-inch wide, dark-tinted cellophane sheet is placed on the top cover of the chamber to block external light, while internal illumination is provided by four flashing bulbs mounted on each side of the chamber’s top.

The apparatus is suspended by wires connected to overhead braces, allowing it to rotate independently of the path bar. The path consists of a 4-foot-long wooden dowel, ¾ inch in diameter, which runs through the center holes in the end pieces and is supported at each end by metal V-cut pivots attached to upright supports. A spring, anchored between the path and the table at the entrance tube, provides tension and facilitates the path’s return to its original position after being displaced. The path extends beyond the exit of the box and has a 12-inch metal rod inserted perpendicularly through its center. The motion of the rodent is recorded on a kymograph drum using a stylus mounted on the cross-bar. The bottom panel of the apparatus is hinged, enabling easy access to retrieve subjects that may fall off the path.