Changes

==Origin==

==Origin==

[[Latin]] ''titillatus'', past participle of ''titillare''

[[Latin]] ''titillatus'', past participle of ''titillare''

*[http://en.wikipedia.org/wiki/17th_century 1620]

*[https://en.wikipedia.org/wiki/17th_century 1620]

==Definitions==

==Definitions==

*1: to [[excite]] pleasurably : arouse by [[stimulation]]

*1: to [[excite]] pleasurably : arouse by [[stimulation]]

*2: tickle

*2: tickle

==Description==

==Description==

'''Tickling''' is the act of [[touching]] a part of the [[body]] so as to cause involuntary twitching movements and/or [[laughter]]. The word "tickle" (help·info) evolved from the [https://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English] ''tikelen'', perhaps [http://en.wikipedia.org/wiki/Frequentative frequentative] of ''ticken'', to touch lightly. The [[idiom]] ''tickled pink'' means to be pleased or delighted.

'''Tickling''' is the act of [[touching]] a part of the [[body]] so as to cause involuntary twitching movements and/or [[laughter]]. The word "tickle" (help·info) evolved from the [https://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English] ''tikelen'', perhaps [https://en.wikipedia.org/wiki/Frequentative frequentative] of ''ticken'', to touch lightly. The [[idiom]] ''tickled pink'' means to be pleased or delighted.

In 1897, psychologists [http://en.wikipedia.org/wiki/G._Stanley_Hall G. Stanley Hall] and Arthur Allin described a "tickle" as two [[different]] types of [[phenomena]]. One type is caused by very light movement across the skin. This type of tickle, called a [http://en.wikipedia.org/wiki/Knismesis_and_gargalesis knismesis], generally does not produce [[laughter]] and is sometimes accompanied by an itching sensation. The question as to why a person could not tickle him/herself was raised by the Greek philosopher, [http://en.wikipedia.org/wiki/Aristotle Aristotle].

In 1897, psychologists [https://en.wikipedia.org/wiki/G._Stanley_Hall G. Stanley Hall] and Arthur Allin described a "tickle" as two [[different]] types of [[phenomena]]. One type is caused by very light movement across the skin. This type of tickle, called a [https://en.wikipedia.org/wiki/Knismesis_and_gargalesis knismesis], generally does not produce [[laughter]] and is sometimes accompanied by an itching sensation. The question as to why a person could not tickle him/herself was raised by the Greek philosopher, [https://en.wikipedia.org/wiki/Aristotle Aristotle].

[http://en.wikipedia.org/wiki/Francis_Bacon Francis Bacon] and [http://en.wikipedia.org/wiki/Charles_Darwin Charles Darwin] believe that humorous [[laughter]] requires a "light" frame of mind. But they differed on ticklish [[laughter]]: Darwin thought that the same light state of mind was required, whereas Bacon said no: When tickled, noted Bacon, "men even in a grieved state of mind, yet cannot sometimes forbear laughing."  

[https://en.wikipedia.org/wiki/Francis_Bacon Francis Bacon] and [https://en.wikipedia.org/wiki/Charles_Darwin Charles Darwin] believe that humorous [[laughter]] requires a "light" frame of mind. But they differed on ticklish [[laughter]]: Darwin thought that the same light state of mind was required, whereas Bacon said no: When tickled, noted Bacon, "men even in a grieved state of mind, yet cannot sometimes forbear laughing."  

Another type of tickle is the [[laughter]] inducing "heavy" tickle, produced by repeatedly applying [[pressure]] to "ticklish" areas, and is known as [http://en.wikipedia.org/wiki/Knismesis_and_gargalesis gargalesis]. Such sensations can be pleasurable or [[exciting]], but are sometimes considered highly unpleasant, particularly in the case of relentless heavy tickling.[http://en.wikipedia.org/wiki/Titillation]

Another type of tickle is the [[laughter]] inducing "heavy" tickle, produced by repeatedly applying [[pressure]] to "ticklish" areas, and is known as [https://en.wikipedia.org/wiki/Knismesis_and_gargalesis gargalesis]. Such sensations can be pleasurable or [[exciting]], but are sometimes considered highly unpleasant, particularly in the case of relentless heavy tickling.[https://en.wikipedia.org/wiki/Titillation]

[[Category: Physiology]]

[[Category: Physiology]]