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habituation

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habituation

Reduction of an animal's behavioral response to a stimulus, as a result of a lack of reinforcement during continual exposure to the stimulus. Habituation is usually considered a form of learning in which behaviours not needed are eliminated. It may be separated from most other forms of decreased response on the basis of permanence; the habituated animal either does not resume its earlier reaction to the stimulus after a period of no stimulus, or, if the normal reaction is resumed on reexposure to the stimulus, it wanes more quickly than before. Vital responses (e.g., flight from a predator) cannot be truly habituated.

habituation [hə‚bich·ə′wā·shən]
(medicine)
A condition of tolerance to the effects of a drug or a poison, acquired by its continued use; marked by a psychic craving for it when the drug is withdrawn.
Mild drug addiction in which withdrawal symptoms are not severe.
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Though, consumed with the hot fire of his purpose, Ahab in all his thoughts and actions ever had in view the ultimate capture of Moby Dick; though he seemed ready to sacrifice all mortal interests to that one passion; nevertheless it may have been that he was by nature and long habituation far too wedded to a fiery whaleman's ways, altogether to abandon the collateral prosecution of the voyage.
Moby Dick I-LXVII by Melville, Herman View in context
His rifle was no old-fashioned Snider, but a modern, repeating Winchester; and he showed habituation to firing it from his shoulder rather than from the hip after the manner of most Malaitans.
Jerry of the Islands by London, Jack View in context
 
 
 
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