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==Categories==
[[Image:Unclesamwantyou.jpg|right|thumb|250px|Pointing at another person with an extended finger is considered rude in many cultures.]]
{{main article|List of gestures}}
 
Although the scientific study of gesture is still in its infancy, some broad categories of gestures have been identified by researchers. The most familiar are the so-called emblems or quotable gestures. These are conventional, culture-specific gestures that can be used as replacement for words, such as the handwave used in the US for "hello" and "goodbye". A single emblematic gesture can have a very different significance in different cultural contexts, ranging from complimentary to highly offensive.<ref>Morris, Desmond, Collett, Peter, Marsh, Peter, O'Shaughnessy, Marie. 1979. Gestures, their origins and distribution. London. Cape</ref> The page [[List of gestures]] discusses emblematic gestures made with one hand, two hands, hand and other body parts, and body and facial gestures.
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==Gestures in Indian Classical Dance==
Prior to the language development, history says communication took place using gestures. Indian Classical Dance, Bharathanatyam, involves a plenty of hand gestures called Mudras. The patterns in which the fingers are assembled depict certain object, place or feel of a person.<ref>https://en.wikipedia.org/wiki/List_of_mudras_(dance)#References</ref>
 
== Gestures in Medicine==
Not very surprising, the gestures in Indian Classical Dance do have an impact on the neural system of human body. It is said it increases oxygen flow, controls the neural system, and thereby cures certain diseases.<ref>https://superscienceknowledge.files.wordpress.com/2013/04/9.pdf</ref>
 
==Electronic interface==
{{main article|Gesture recognition}}
The movement of gestures can be used to interact with technology like computers, using [[Touch user interface|touch]] or [[multi-touch]] popularised by the [[iPhone]], physical [[Motion detection|movement detection]] and visual [[motion capture]], used in [[video game console]]s.