unconditioned reflex

1. Conditioned reflex, different from the inherent unconditioned reflex, is an advanced nervous activity gradually developing in human's life.
   条件反射，不同于与生俱来的非条件反射，是人们在生活中建立起来的高级神经活动。
2. A type of learning in which a conditioned stimulus is paired with an unconditioned stimulus to elicit a reflex response or respondent behaviour-Also referred to as Pavlovian Conditioning.
   与中性刺激多次结合有效刺激而使有机体形成的条件反应。即是一种新的刺激引起已存在的反射反应。一种自动化的、非习得性的反应。
3. First, there's difference in the associative network. The association of similarity, started by the same external stimulus to the same sense of different nations, may sometimes differ under the influence of different cultures though the synaesthetic physiological phenomenon belongs to the unconditioned reflex.
   首先是联想机制差异，通感生理现象虽属与生俱来的非条件反射，但不同民族的同一感官对同一外部刺激所引起的相似联想并非处处一致，往往受制于不同文化。

noun

1. an automatic instinctive unlearned reaction to a stimulus

   Synonym:    reflexreflex responsereflex actioninstinctive reflexinnate reflexinborn reflexphysiological reaction