The primary symptoms of the condition are hyperactivity, impulsivity and inattention.
这种病症的主要症状就是过度活跃，易冲动以及注意力不集中。
BACKGROUND: Abnormality exists in the process of the strengthening mechanism of attention deficit hyperactivity disorder, and impulsivity is the main manifestation of abnormal strengthening mechanism.
背景：注意缺陷多动障碍存在着强化机制的异常，而冲动性是强化机制异常的主要表现。
OBJECTIVE: to probe into the change of impulsivity of animal model (spontaneously hypertensive rat, SHR) of attention deficit hyperactivity disorder.
目的：探究注意缺陷多动障碍动物模型(自发高血压大鼠)冲动性的变化。
The irritability, excitability and impulsivity that mark the disorder often overlap with the signs of attention deficit hyperactivity disorder.
这种障碍显著的易怒、兴奋与冲动等特点通常与注意力缺陷多动障碍症状相交迭。
Attention deficit hyperactivity disorder (ADHD) is a psychiatric disorder characterized by the behavioral symptoms of inattention, impulsivity, and hyperactivity.
注意缺陷多动障碍(ADHD)是指一种以注意缺陷、多动、冲动的行为表现为主要特征的精神病理障碍。
Attention deficit hyperactivity disorder (ADHD) is a psychiatric disorder characterized by the behavioral symptoms of inattention, impulsivity, and hyperactivity.
注意缺陷多动障碍(ADHD)是指一种以注意缺陷、多动、冲动的行为表现为主要特征的精神病理障碍。
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