The visual system that a mountain biker would use to identify changes in the trail or to perceive a rider in front of him or her is the: fovea. parallel processing system. ambient system. focal system. Solution The two types of pathways in visual systems are focal and ambient. The mountain biker uses ambient system to identify changes in the trial or to perceive a rider in front of him/her. The peripheral vision also referred as ambient pathway is concerned with movement and depth perception and is generally considered to be crucially involved in motion processing..