Type 1A afferent is the key proprioceptive source for information about the position of our body and limbs - tells us about the length of every muscle group in the body and that if they're lengthening, we know the speed they're lengthening at
Type 1A afferents also provide the afferent drive of spinal reflexes - information that triggers stretch reflexes, which is an important part of motor control
muscle are the key source of proprioceptive information that enables motor control, so muscle damage can also impact proprioceptive information
