Morita Takeshi, Nishijima Tomoko, Tokura Hiromi
Department of Living Environmental Science, Fukuoka Women's University, Fukuoka 813-8528, Japan.
Physiol Behav. 2005 Jun 2;85(2):93-8. doi: 10.1016/j.physbeh.2005.02.024.
The present study investigated if the time sense (using short intervals) was influenced by the phase of the menstrual cycle. Fourteen women (age: 21.8+/-1.3 years, height: 158.1+/-4.6 cm, body weight: 50.9+/-3.2 kg, mean+/-S.D.) were examined. Their menstrual phase was checked by the participants themselves prior to the study, by measuring oral temperatures after waking but while still in bed over the course of 1-2 months. Participants entered a climatic chamber (26 degrees C, 60% RH, 200 lx) at 09:00 h during either the follicular or luteal phase, and sat quietly on a sofa for 4 h before performing the time sense tests. These used intervals ranging from 1 to 60 s, and consisted of time estimation and time production. In the time estimation test, the participant was required to estimate the interval between two signals provided by buzzers; 10 random intervals were given. For the time production test, the participant was required to produce the interval displayed on a screen by pushing the space key of a computer twice; 10 random intervals were given. The order of testing during the follicular and luteal phases, and of performing the time estimation and time production tests, was counterbalanced. The results indicate that the time sense ran significantly faster during the luteal phases. The findings are discussed in terms of a higher load error between the actual core temperature and its thermoregulatory set-point during the luteal phase of the menstrual cycle.
本研究调查了时间感知（使用短时间间隔）是否受月经周期阶段的影响。对14名女性（年龄：21.8±1.3岁，身高：158.1±4.6厘米，体重：50.9±3.2千克，均值±标准差）进行了检查。在研究开始前，参与者通过在1 - 2个月的时间里，醒来但仍躺在床上时测量口腔温度，自行检查月经阶段。参与者在卵泡期或黄体期的09:00进入气候舱（26摄氏度，60%相对湿度，200勒克斯），并在沙发上安静地坐4小时，然后进行时间感知测试。这些测试使用的时间间隔从1秒到60秒不等，包括时间估计和时间生成。在时间估计测试中，要求参与者估计蜂鸣器发出的两个信号之间的间隔；给出10个随机间隔。在时间生成测试中，要求参与者通过两次按下计算机的空格键来生成屏幕上显示的间隔；给出10个随机间隔。卵泡期和黄体期的测试顺序以及时间估计和时间生成测试的执行顺序是平衡的。结果表明，在黄体期时间感知明显更快。根据月经周期黄体期实际核心体温与其体温调节设定点之间更高的负荷误差对研究结果进行了讨论。
