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An early survey of head shake and other gestures was The Expression of the Emotions in Man and Animals, written by Charles Darwin in 1872. Darwin wrote to missionaries in many parts of the world asking for information on local gestures, and concluded that shaking head for "no" was common to many different groups. [5]
Some cultures also swap the meanings between nodding and head shaking. [3] Specifically in Greece and in Cyprus, the single nod of the head up that indicates "no" is almost always combined with a simultaneous raise of the eyebrows and most commonly also with a slight (or complete) rolling up of the eyes.
The head bobble, head wobble, or Indian head shake refers to a common gesture found in South Asian cultures, most notably in India. The motion usually consists of a side-to-side tilting of the head in arcs along the coronal plane. [1] A form of nonverbal communication, it may mean yes, good, maybe, okay, or I understand, depending on the ...
Shaken baby syndrome (SBS), also known as abusive head trauma (AHT), is a controversial and scientifically disputed [4] [5] [6] medical condition in children younger than five years old, [3] hypothesized to be caused by blunt trauma, vigorous shaking, or a combination of both.
Actress Katharine Hepburn (1907–2003) had an essential tremor, possibly inherited from her grandfather, [96] that caused her head—and sometimes her hands—to shake. [ 97 ] [ 98 ] [ 99 ] The tremor was noticeable by the time of her performance in the 1979 film The Corn Is Green , when critics mentioned the "palsy that kept her head ...
Donald Trump shaking hands with Emmanuel Macron on Bastille Day, July 14, 2017. Donald Trump, the 45th and 47th U.S president and businessman, has unusual approaches to the practice of handshaking; his handshakes with world leaders since his inauguration as U.S. president have been the subject of extensive commentary. [1]
Bobble-head doll syndrome is a rare neurological movement disorder in which patients, usually children around age 3, begin to bob their head and shoulders forward and back, or sometimes side-to-side, involuntarily, in a manner reminiscent of a bobblehead doll.
Movements of the neck includes: flexion, extension, (nodding yes), and rotation (shaking head no). The mouth has evolved to support chewing, (mastication) and swallowing (deglutition), and speech (phonation). In addition to the teeth, other structures that aid chewing are the lips, cheeks, tongue, hard palate, soft palate, and floor of the mouth.