Random Odd Thing of the Day: Knismesis and Gargalesis

[elrhiarhodan]

Knismesis and gargalesis are the scientific terms, coined in 1897 by psychologists G. Stanley Hall and Arthur Allin, used to describe the two types of tickling.

Knismesis

Knismesis refers to the light, feather-like type of tickling. This type of tickling generally does not induce laughter and is often accompanied by an itching sensation. The knismesis phenomenon requires low levels of stimulation to sensitive parts of the body, and can be triggered by a light touch or by a light electrical current. Knismesis can also be triggered by crawling insects or parasites, prompting scratching or rubbing at the ticklish spot, thereby removing the pest. It is possible that this function explains why knismesis produces a similar response in many different kinds of animals. In a famous example, described in Peter Benchley's Shark!, it is possible to tickle the area just under the snout of a great white shark, putting it into a near-hypnotic trance.

Gargalesis

Gargalesis refers to harder, laughter-inducing tickling, and involves the repeated application of high pressure to sensitive areas. This "heavy tickle" is often associated with play and laughter. The gargalesis type of tickle works on humans and primates, and possibly on other species. Because the nerves involved in transmitting "light" touch and itch differ from those nerves that transmit "heavy" touch, pressure and vibration, it is possible that the difference in sensations produced by the two types of tickle are due to the relative proportion of itch sensation versus touch sensation.
While it is possible to trigger a knismesis response in oneself, it is usually impossible to produce gargalesthesia, the gargalesis tickle response, in oneself.

Hypergargalesthesia is the condition of extreme sensitivity to tickling.


Source - Wikipedia, via Best of Wikipedia, via Sleevia

Comments

[deepbluemermaid.livejournal.com]

Hypergargalesthesia is the condition of extreme sensitivity to tickling.

I think I have this! I am normally averse to violence, but if someone even threatens to tickle me I freak out. One of my exes has a small scar from where he tried to tickle me and I attacked him with my rather sharp fingernails.

[attackfish.livejournal.com]

Without fail, tickling sends me into an asthma attack. It also prompts yelling and hitting, which was awkward in high school.

[elrhiarhodan]

I hate being tickled. It makes me sick. When I was a little girl, one of the only times I could remember throwing up was when my sisters tackled me, pinned me down and tickled me.

I puked all over them.

They never did it again.