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abasia

Overview page. Subjects: Psychology — Medicine and Health.

Inability to walk. Compare dysbasia. [From Greek a- without  +  basis a step, from bainein to step or go  +  -ia indicating a condition or quality]

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abnormal

Overview page. Subjects: Psychology — Medicine and Health.

Departing from what is usual or what is the rule or norm (1, 2). [From Latin ab from  +  norma a rule  +  -alis of or relating to]

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abreaction

Overview page. Subjects: Psychology — Medicine and Health.

(ab-ree-ak-shŏn)

the release of strong emotion commonly associated with a buried memory. Abreaction may be induced as a treatment for conversion disorder, anxiety state, and other...

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absolute error

Overview page. Subjects: Psychology — Sports and Exercise Medicine.

In psychophysics, the difference between the judged value of a stimulus and its true value, ignoring the direction of the difference. Compare relative error. [Alluding to the mathematical...

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absolute refractory period

Overview page. Subjects: Sports and Exercise Medicine — Psychology.

A refractory period (2), lasting up to 2 milliseconds after the onset of an action potential, during which no stimulus (5) can initiate another nerve impulse in the neuron. Compare relative...

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abstinence syndrome

Overview page. Subjects: Sports and Exercise Medicine — Psychology.

A pattern of signs and symptoms associated with withdrawal in a drug-dependent person who is suddenly deprived of a regular supply of the drug and is forced to practise abstinence (1).

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acalculia

Overview page. Subjects: Psychology — Medicine and Health.

n. an acquired inability to make simple mathematical calculations. It is a symptom of disease in the dominant parietal lobe of the brain. See Gerstmann’s syndrome.

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accessory nerve

Overview page. Subjects: Medicine and Health — Psychology.

Either of two pairs of eleventh cranial nerves, the motor nerves arising partly from the lateral walls of the medulla oblongata and partly from the cervical (neck) region of the spinal...

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accommodation

Overview page. Subjects: Medicine and Health — Psychology.

n. adjustment of the shape of the lens to change the focus of the eye. When the ciliary muscle (see ciliary body) is relaxed, suspensory ligaments attached to the ciliary body...

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accommodation reflex

Overview page. Subjects: Psychology — Medicine and Health.

(convergence reflex) a reflex that occurs when an individual focuses on a near object, in which the crystalline lens becomes more convex, the pupils constrict, and the eyes turn inwards.

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