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Tonic immobility is a natural state of paralysis that animals enter, in most cases when presented with a threat. Image File history File links Please see the file description page for further information. ... Playing Possum is singer-songwriter Carly Simons fifth studio album, released in 1975. ... This article does not cite any references or sources. ...

Sharks can be placed in a tonic immobility state by inverting them. The shark remains in this state of paralysis for an average of fifteen minutes before it recovers. Scientists have exploited this phenomenon to study shark behaviour.^[1] Usually when being tested by scientists under this "tonic" state the scientists will put a chemical plume in the water awakening the shark. Orders Carcharhiniformes Heterodontiformes Hexanchiformes Lamniformes Orectolobiformes Pristiophoriformes Squaliformes Squatiniformes Symmoriida(extinct) Sharks (superorder Selachimorpha) are fish with a full cartilaginous skeleton[1] and a streamlined body. ... Tonic in physiology refers to a muscle which is predominantly toned. ... To invert means: to make something inverted to use an inverter the process of inversion In Freudian psychology, an invert is a homosexual. ... This article does not cite any references or sources. ... A minute is a unit of time equal to 1/60th of an hour and to 60 seconds. ... A phenomenon (Greek: , pl. ... In hydrodynamics, a plume is a column of one fluid moving through another. ...

Tonic immobility also can be somewhat effective on anole lizards and a loose study was done with tonic immobility with the rabbit. Both were inconsistent examples of tonic immobility. An Anole is a reptile of the family Polychrotidae Anole could refer specifically to any of the following lizards: Carolina anole or Green Anole Puerto Rican Crested Anole Culebra Island Giant Anole Brown Anole Knight Anole Blue Anole Anole could also refer to the Marvel comics character, Anole (comics) Category... Genera Pentalagus Bunolagus Nesolagus Romerolagus Brachylagus Sylvilagus Oryctolagus Poelagus Rabbits are small mammals in the family Leporidae of the order Lagomorpha, found in several parts of the world. ...

Tonic immobility has also been used to describe the paralysis which often immobilizes animals such as rodents or birds when they feel threatened by a predator. It can be argued that tonic immobility plays a role in survival if it helps a hunted animal to blend in with its surroundings by remaining as motionless as an inanimate object. This tonic state is common with invertebrates as well. This snapping turtle is trying to make a meal of a Canada goose, but the goose is too wary. ... Survival may refer to: Survival skills Survival kit Survivalism Survival, a studio album by Grand Funk Railroad Survival (album), a Bob Marley reggae album Survival (Doctor Who), an episode of Doctor Who Survival (television), a British wildlife television program Survival International a charity Survival Festival, Australia This is a disambiguation... This article is being considered for deletion in accordance with Wikipedias deletion policy. ... Invertebrate is a term that describes any animal without a spinal column. ...

Inducing tonic immobility in common animals requires, in some cases, extreme treatment such as electric shock along with other elements that produce stress.

Contrary to popular belief, theories regarding "putting a lobster to sleep" seem to be rumors without empirical data to confirm their validity. A central concept in science and the scientific method is that all evidence must be empirical, or empirically based, that is, dependent on evidence or consequences that are observable by the senses. ...

See also

• Trout tickling
• Chicken hypnotism

Note: Sharks may not always respond to tonic immobility by physical inversion of the animal as has been done with lemon and reef sharks. With tiger sharks 10 to 15 feet in length, tonic immobility may be achieved by placing hands lightly on the sides of the animal's snout approximately to the general area surrounding it's eyes. Great white sharks have been shown to be not as responsive as other species whenever tonic immobility has been attempted. Trout tickling is the art of rubbing the underbelly of a trout using fingers. ... A chicken can be hypnotized, or put into a trance by holding its head down against the ground, and continuously drawing a line along the ground with a stick or a finger, starting at its beak and extending straight outward in front of the chicken. ...

References

1. ^ Tonic Immobility. Shark defense: Chemical repellents. Retrieved on January 28, 2006.