Gao P, Harvey M, Mook D G, Zeigler H P
Hunter College of CUNY, New York, NY 10021, USA.
Physiol Behav. 1998 Nov 15;65(2):355-9. doi: 10.1016/s0031-9384(98)00177-2.
Food-deprived rats were given intermittent access or, in a replication, continuous access to a 20% sucrose solution. Both drinking and nondrinking behaviors were recorded. During the ensuing drinking bout, latency of lapping after snout apposition, and duration of lapping bouts, did not change. Approaches to the sipper tube usually eventuated in lapping, though aborted approaches increased in frequency late in the session. Drinking was interrupted by nondrinking behaviors which appeared in a characteristic rostro-caudal sequence: partial head withdrawal from the drinking aperture, then full head withdrawal, then movements of the front paws, then movement of the hind paws with full-body locomotion. All these behavioral changes occurred before there was any appreciable reduction in rate of lapping.
对食物匮乏的大鼠给予间歇性获取或（在一次重复实验中）持续获取20%蔗糖溶液的机会。记录饮水行为和非饮水行为。在随后的饮水时段，口鼻接触后舔舐的潜伏期以及舔舐时段的持续时间没有变化。接近吸管通常会导致舔舐行为，不过在实验后期，未成功的接近行为频率增加。饮水会被非饮水行为打断，这些行为按从吻部到尾部的特定顺序出现：先将头部部分从饮水口撤回，然后完全撤回，接着前爪移动，最后后爪移动并伴有全身移动。所有这些行为变化都发生在舔舐速率出现明显下降之前。
