中文摘要：

目的探讨由高度引起的危险情境下小鼠的谨慎行为。方法采用自行设计的悬板任务，使小鼠在水平架起的木板上通过，以通过悬板的时间和其间旁顾行为的次数为指标，考察悬板高度和被试视觉线索两因素对小鼠谨慎行为的影响。结果高度增加可导致谨慎行为的出现，悬板高度60cm条件下通过时间[（22．55±14．64）s]长于15cm条件的[（12．16±8．67）s，P〈0．05]；控制被试对潜在危险的视觉线索则可减少谨慎行为的发生，旁顾行为次数从之前的（2．95±1．73）次下降到之后的（1．95±1．27）次（P〈0．05），但也可能引发其他知觉偏差。结论被试预期到情境的危险程度与其谨慎行为之间存在权衡关系。

英文摘要：

Objective To study the cautious behaviors of mice under dangerous conditions caused by height. Methods An elevated board task was designed,in which the mice were employed to get through a horizontally elevated board. The time of getting through and number of looking-aside behaviors were recorded under different experimental conditions with different elevated height and visual cues. Results The mean time of getting through the elevated board with a height of 60cm was significantly longer than that of 15cm [ （22.55 ± 14.64 ）s Vs （ 12.16 ± 8.67） s, P 〈 0. 05 ]. The number of looking-aside behaviors decreased from （2.95 ± 1.73 ） to （ 1.95 ± 1.27 ）, P 〈 0. 05 ,when the visual cues on potential danger were controlled. Conclusion The cautious behaviors increase with the height of elevated board and decrease when controlling for the visual cues on potential danger, which indicate a trade-off relationship between the perceived danger and cautious behaviors.