habituation (redirected from Ignorant habit)

habituation /ha·bit·u·a·tion/ (hah-bich″u-a´shun)

1. the gradual adaptation to a stimulus or to the environment, with a decreasing response.

2. an older term denoting sometimes tolerance and sometimes a psychological dependence due to repeated consumption of a drug, with a desire to continue its use, but with little or no tendency to increase the dose.

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ha·bit·u·a·tion (h-bch-shn)

n.

1. The process of habituating or the state of being habituated.

2. Physiological tolerance to a drug resulting from repeated use.

3. Psychological dependence on a drug.

4. The decline of a conditioned response following repeated exposure to the conditioned stimulus.

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habituation

[həbich′o̅o̅·ā′shən]

Etymology: L, habituare, to become used to

1 an acquired tolerance gained by repeated exposure to a particular stimulus such as alcohol.

2 a decline and eventual elimination of a conditioned response by repetition of the conditioned stimulus.

3 psychologic and emotional dependence on a drug, tobacco, or alcohol that results from the repeated use of the substance but without the addictive, physiologic need to increase dosage. Also called negative adaptation. Compare addiction.

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habituation,

n the process of decreased response to repeated stimulation.

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habituation,

n a state in which an individual involuntarily tends to continue the use of a drug. Generally refers to the state in which an individual continues self-administration of a drug because of psychologic dependence without physical dependence.

Haemophilus

n a genus of gram-negative pathogenic bacteria, frequently found in the respiratory tract of humans and other animals.
Haemophilus are generally sensitive to cephalosporins, tetracyclines, and sulfonamides.

H. influenzae,

n a small, gram-negative, nonmotile, parasitic bacterium that occurs in two forms, encapsulated and nonencapsulted, and in six types: A, B, C, D, E, and F. Almost all infections are caused by the encapsulated type B organisms. It is found in the throats of 30% of healthy, normal people. It may cause destructive inflammation of the larynx, trachea, and bronchi in children and debilitated older people.

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habituation

1. the gradual adaptation to a stimulus or to the environment.

2. the extinction of a conditioned reflex by repetition of the conditioned stimulus; called also negative adaptation.

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habituation

Psychology An adaptive response characterized by a ↓ reactivity to a repeated stimulus–eg, a substance of abuse or repeated electrical stimulation of a nerve