Moye T B, Rudy J W
Dev Psychobiol. 1985 Sep;18(5):395-409. doi: 10.1002/dev.420180505.
A Pavlovian fear conditioning procedure was used to examine the ontogeny of the hooded rats' learned responses to visual stimulation. The data suggests a dissociation in the emergence of the processes required to detect visual events and those necessary for learning an association between visual stimulation and shock. Pups did not condition to a visual conditioned stimulus (CS) paired with a shock unconditioned stimulus (US) until they were 17 days old, even though 15-day-olds were clearly able to detect the visual CS. Although 15-day-olds failed to condition to the visual CS, they conditioned successfully when an auditory CS was paired with shock. Thus, the 15-day-olds' failure to condition to the visual CS was not due to a performance deficit or to a general ineffectiveness of shock as an US. These data suggest that the components of the visual system that mediate detection and those required for associative learning mature sequentially.
采用巴甫洛夫恐惧条件反射程序来研究戴帽大鼠对视觉刺激的习得反应的个体发生。数据表明，在检测视觉事件所需的过程与学习视觉刺激和电击之间关联所需的过程的出现上存在分离。幼崽直到17日龄时才会对与电击无条件刺激（US）配对的视觉条件刺激（CS）产生条件反射，尽管15日龄的幼崽显然能够检测到视觉CS。虽然15日龄的幼崽未能对视觉CS产生条件反射，但当听觉CS与电击配对时，它们能成功产生条件反射。因此，15日龄的幼崽未能对视觉CS产生条件反射并非由于表现缺陷或电击作为US的普遍无效性。这些数据表明，介导检测的视觉系统组件和联想学习所需的组件是依次成熟的。
