Haptic perception (Greek: haptόs "palpable", haptikόs "suitable for touch") means literally the ability "to grasp something", and is also known as stereognosis. Perception in this case is achieved through the active exploration of surfaces and objects by a moving subject, as opposed to passive contact by a static subject during tactile perception.[1] Haptic perception involves the cutaneous receptors of touch, and proprioceptors that sense movement and body position.[2] The inability for haptic perception is known as astereognosis.