FOOD AND LIGHT AS ENTRAINERS OF CIRCADIAN RUNNING ACTIVITY IN RAT
FOOD AND LIGHT AS ENTRAINERS OF CIRCADIAN RUNNING ACTIVITY IN RAT
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DOI：
10.1016/0031-9384(77)90201-3
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发表时间：
1977-01-01
影响因子：
2.9
通讯作者：
ADLER, NT
中科院分区：
文献类型：
--
作者：
EDMONDS, SC;ADLER, NT
在何种程度上可以控制2种不同的环境线索，周期性的食物和环境光周期的昼夜运行活动，进行了研究。雄性大鼠（7只）连续暴露于4种条件。在光照周期（LD 12：12）和持续获得食物的情况下，动物基本上表现出夜间奔跑的模式。在LD周期的照明部分期间获得食物2小时，所有动物在食物呈现之前表现出跑步的爆发。这7只动物中的3只同时显示出与光照周期相关的跑步减少。动物继续运行之前的定期介绍的食物时，恒定的光取代LD周期。当允许连续获得食物，并且仍然暴露在恒定的光照下时，动物在食物被递送的时间内继续表现出奔跑的爆发。大鼠的昼夜活动周期受到定期获取食物的影响。在LD周期的光照部分（当大鼠通常不活动时），定期提供食物时，食物呈现在控制跑步活动方面比光线索更有效。
The extent to which carcadian running activity could be controlled by 2 different environmental cues, periodic access to food and ambient light cycles, was studied. Male rats (7) were successively exposed to 4 conditions. With light cycles (LD 12:12) and continuous access to food, the animals displayed a basically nocturnal pattern of running. With access to food for 2 h during the illuminated portion of the LD cycle, all of the animals showed a burst of running preceding food presentation. Three of these 7 animals concurrently showed diminished running associated with the light cycle. The animals continued to run before the periodic presentation of food when constant light replaced the LD cycle. When allowed continuous access to food, and still exposed to constant light, the animals continued to show bursts of running around the time that food had been delivered. Rats'' circadian activity cycles were influenced by periodic access to food. When periodic food was offered during the illuminated portion of the LD cycle (when rats are normally inactive) food presentation was a more potent entrainer than photic cues in controlling running activity.