A shaggy dog demonstrates a<unk> : when she is<unk> ed beneath her front leg, her back leg moves vigorously The<unk>  is a response to activation of sensory neurons whose peripheral terminals are located on the surface of the body. Some sensory neurons can be activated by stimulation with an external object such as a parasite on the body surface. Alternatively, some sensory neurons can respond to a chemical stimulus that produces an itch sensation. During a<unk> , a nearby limb reaches toward and rubs against the site on the body surface that has been stimulated. The<unk>  has been extensively studied to understand the functioning of neural networks in vertebrates. Despite decades of research, key aspects of the<unk>  are still unknown, such as the neural mechanisms by which the reflex is terminated.
Scratch reflex
Tendon reflex
Red reflex
Landau reflex
Stretch reflex
Plantar reflex
Tonic vibration reflex
Axon reflex