What is the Spherical Treadmill?
The large spherical treadmill is a lightweight high-density polystyrene sphere that floats on a sparse bed of air-cushioned ping-pong ball bearings. The treadmill was designed for behavior and neuroscience studies of mice and small animals.
For mice (8-12 wk, 20-30 g), we present a 16” (40.64 cm, approx. 65-70 g) diameter spherical treadmill. For young adult rats (3-8 wk, 60-150 g), we present a 24” (60.96 cm, approx. 225-275 g) diameter system. For body tethered adult rats of 350-400g, we suggest a treadmill weight of 335-350g.