Horn G
Behav Neurosci. 1986 Dec;100(6):825-32. doi: 10.1037//0735-7044.100.6.825.
If a visually naive chick is exposed to one of a wide range of conspicuous objects, the chick may learn its characteristics. A series of biochemical studies has implicated a restricted part of the forebrain in this process of imprinting; a specific region (IMHV) has been identified which may be a site of information storage. Changes in the morphology of synapses occur in this region as a consequence of training. The left and right IMHV regions play different roles in the imprinting process. Exposure to a simple artificial object, a rotating red box, has different neural consequences from those associated with exposure to a complex object, a rotating stuffed jungle fowl, which resembles a conspecific. These differences may be related to the differences in complexity of the two training objects. Another possibility is that two neural systems are implicated in imprinting: a system that underlies a predisposition to approach objects resembling conspecifics and a learning system, of which IMHV is a crucial component, that is engaged by particular objects and that in "natural" circumstances also allows the chick to learn the characteristics of its mother.
如果一只视觉经验匮乏的雏鸡接触到众多引人注目的物体中的一个，它可能会了解其特征。一系列生化研究表明，前脑的一个特定区域参与了这种印记过程；已经确定了一个特定区域（IMHV），它可能是信息存储的部位。由于训练，该区域的突触形态会发生变化。左右IMHV区域在印记过程中发挥着不同的作用。接触一个简单的人造物体，一个旋转的红色盒子，会产生与接触一个复杂物体，一个旋转的填充丛林鸡（类似于同种个体）不同的神经后果。这些差异可能与两个训练物体的复杂程度差异有关。另一种可能性是，印记涉及两个神经系统：一个是促使雏鸡接近类似同种个体物体的倾向的基础系统，另一个是学习系统，IMHV是其关键组成部分，该学习系统由特定物体激活，并且在“自然”环境中还能让雏鸡了解其母亲的特征。
