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Reference.org
Haptic perception
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<p>Haptic perception means literally the ability "to grasp something", and is also known as stereognosis. <a href="/facts/Perception/xLK0n2q4">Perception</a> 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 <i>tactile perception</i>. Haptic perception involves the <a href="/facts/Cutaneous_receptor/EsVHHEI4">cutaneous receptors</a> of <a href="/facts/Somatosensory_system/0nhRsBnt">touch</a>, and <a href="/facts/Proprioceptor/Ik79bA2x">proprioceptors</a> that sense movement and body position. The inability for haptic perception is known as <a href="/facts/Astereognosis/hYL2o9I6">astereognosis</a>. </p>