Kukorelli T, Détári L
Department of Comparative Physiology, Eötvös Loránd University, Budapest, Hungary.
Physiol Behav. 1994 Apr;55(4):705-10. doi: 10.1016/0031-9384(94)90048-5.
Hypnogenic (HS) or arousing (AS) stimulations of the small intestine (INT), splanchnic (SPL), and vagal (VAG) nerves were used to modify the predatory behavior (PB) elicited by stimulating the lateral hypothalamus (LHS). HS induced EEG synchronization and sleep. AS aroused the cat from slow-wave sleep. LHS induced the cat to attack an anesthetized rat and bite its neck after an exploratory activity. The following parameters of PB were determined: biting latency (BL), the interval between the beginning of LHS and the touching the rat by the cat's muzzle; exploratory time (ET), which begins with an environmental search and culminates in orienting toward the rat; attack time (AT), in which the cat stalks and bites the rat. HS, delivered for 5, 10, 15 min to INT, SPL, and VAG prior to LHS, increased BL and ET and did not affect AT. AS, delivered for 10 s to INT or VAG prior to LHS, decreased BL by reducing ET. SPL AS shortened BL by decreasing both ET and AT. The viscerosensory effects on PB were decreased by increasing the intensity of LHS; a ferocious attack with BL less than 10 s was not influenced by either HS or AS. These results indicate that the viscerosensory influence can modify PB by inhibiting or facilitating the priming events of the attack.
采用对小肠（INT）、内脏（SPL）和迷走神经（VAG）进行致眠（HS）或唤醒（AS）刺激，来改变刺激下丘脑外侧区（LHS）所引发的捕食行为（PB）。HS可诱导脑电图同步化和睡眠。AS能将猫从慢波睡眠中唤醒。LHS可使猫在进行探索活动后攻击一只麻醉的大鼠并咬其颈部。测定了PB的以下参数：咬潜伏期（BL），即从LHS开始到猫用口鼻接触大鼠之间的间隔时间；探索时间（ET），始于对环境的搜索并以朝向大鼠定向为终点；攻击时间（AT），即猫悄悄靠近并咬大鼠的时间段。在LHS之前对INT、SPL和VAG给予5、10、15分钟的HS，会增加BL和ET，而不影响AT。在LHS之前对INT或VAG给予10秒的AS，通过缩短ET来减少BL。SPL的AS通过同时减少ET和AT来缩短BL。增加LHS的强度可降低内脏感觉对PB的影响；BL小于10秒的凶猛攻击不受HS或AS的影响。这些结果表明，内脏感觉影响可通过抑制或促进攻击的启动事件来改变PB。
