responses including stretch reflex. Ascending pathways to the brain have some similarities with the cutaneous afferents, but are different because the proprioceptive information also has to reach the cerebellum which controls the timings of muscle contractions for voluntary movements. See also Intrafusal muscle fiber Type II sensory fiber Gamma motor neuron Beta motor neuron Proprioception Motor system Muscle Muscle spindle Reflex action References External links Lecture notes from John D.C. Lambert on neurophysiology. http://highered.mcgraw-hill.com/sites/0070272468/student_view0/chapter9/chapter_overview.html Sensory systems