Vinogradova E P
Department of Higher Nervous Activity and Psychophysiology, St.-Petersburg State University.
Zh Vyssh Nerv Deiat Im I P Pavlova. 1999 Nov-Dec;49(6):1039-45.
Anxiety and motor activity of female white rats in the elevated plus-maze were studied at different stages of the reproduction cycle (estrus, diestrus, pregnancy and lactation). The level of anxiety was lower, and that of locomotor and exploratory activity was higher during estrus and lactation than during diestrus and pregnancy. Exposure to chronic pain of threshold intensity did not induce behavioral changes in pregnant rats. There was no difference between the control and experimental animals in the level of plasma corticosterone.
在繁殖周期的不同阶段（发情期、间情期、孕期和哺乳期），研究了高架十字迷宫中雌性白鼠的焦虑和运动活动情况。发情期和哺乳期的焦虑水平较低，而运动和探索活动水平高于间情期和孕期。暴露于阈强度的慢性疼痛未在怀孕大鼠中引起行为变化。对照动物和实验动物的血浆皮质酮水平没有差异。
