Effects of rat sex differences and lighting on locomotor exploration of a circular open field with free-standing central corners and without peripheral walls
Effects of rat sex differences and lighting on locomotor exploration of a circular open field with free-standing central corners and without peripheral walls
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DOI：
10.1016/j.bbr.2008.09.001
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发表时间：
2009-01-23
影响因子：
2.7
通讯作者：
Timberlake, William
中科院分区：
文献类型：
--
作者：
Alstott, Jeff;Timberlake, William
一个典型的开放领域包括一个正方形的外壳，由四个直墙连接相同的角落。几十年来，行为研究者一直在利用这些领域的开放中心和更隐蔽的周边来研究药物、性别差异和照明对恐惧和焦虑行为表达的影响。本研究“颠倒”了圆形视野中心和边缘的相对安全性，重新考察了开阔视野行为与经验、性别差异和光照的功能关系。在每天六次的暴露中，无论是在光明还是黑暗中，雄性都迅速增加了对中心的偏好。光照下的雌性也形成了类似的模式，只是速度较慢;黑暗中的雌性继续把大部分时间花在开阔的外围，包括田野的边缘。所有群体的行为，特别是深色雌性，强烈支持环境评估在开放领域行为中的持续重要性。(C)2008 Elsevier B. V.保留所有权利。
A typical open field consists of a square enclosure, bounded by four straight walls joined by identical corners. For decades behavioral researchers have used the open center and more sheltered perimeter of such fields to examine the effects of drugs, sex differences, and illumination on the behavioral expression of fear and anxiety. The present study "reversed" the relative security of the center and periphery of a circular field to re-examine the functional relation of open field behavior to experience, sex differences and lighting. Across six daily exposures, males in both the light and dark rapidly increased their preference for the center. Females in the light developed a similar pattern, though more slowly; females in the dark continued to spend the great majority of their time in the open periphery, including the edge of the field. The behavior of all groups, but especially the dark females, strongly supports the continued importance of environmental assessment in open field behavior. (C) 2008 Elsevier B.V. All rights reserved.