Albert D J, Walsh M L, Ryan J, Siemens Y
Physiol Behav. 1982 Dec;29(6):989-94. doi: 10.1016/0031-9384(82)90288-8.
Mouse killing was observed and videotaped at forty-eight hr following surgery in rats with lesions of the medial hypothalamus or the medial accumbens. The initial attacks and killing bites of the lesioned rats were directed at the anterior dorsal surface, predominantly to the regions of the neck, shoulders, and thorax and did not differ from those of spontaneous mouse killing rats. The latency to attack was significantly shorter for the lesioned animals but the time required to kill following the attack tended to be longer. Lesioned animals spent significantly more time biting the prey following the kill and left significantly more bite marks on the prey than did the spontaneous killers. When the dead prey was moved about the cage following the kill, the lesioned animals showed a significantly greater tendency to attack it than did the spontaneous killers. Following the test of mouse killing, each rat was successively exposed to a freshly killed mouse, a cotton wad, and a wood block. The lesioned animals attacked the dead mouse and the cotton wad as though they were live mice whereas the spontaneous killers did not. These results suggest that while the killing is similar for lesioned and spontaneous killers, the lesioned animals show a heightened response to the killing experience. This is manifested in an exaggeration of attack behaviors toward prey and prey-like stimulus objects following an initial killing experience.
在内侧下丘脑或内侧伏隔核受损的大鼠手术后48小时，观察并录制了其捕杀小鼠的行为。受损大鼠最初的攻击和致命撕咬主要针对前背表面，主要是颈部、肩部和胸部区域，与自发捕杀小鼠的大鼠没有差异。受损动物的攻击潜伏期明显更短，但攻击后杀死猎物所需的时间往往更长。与自发捕杀者相比，受损动物在杀死猎物后花费更多时间撕咬猎物，并且在猎物上留下的咬痕明显更多。在杀死猎物后将死猎物在笼中移动时，受损动物比自发捕杀者表现出明显更强的攻击倾向。在小鼠捕杀测试后，每只大鼠依次接触一只刚杀死的小鼠、一个棉球和一个木块。受损动物攻击死鼠和棉球，就好像它们是活小鼠一样，而自发捕杀者则不会。这些结果表明，虽然受损者和自发捕杀者的捕杀行为相似，但受损动物对捕杀经历表现出更高的反应。这表现为在最初的捕杀经历后，对猎物和类似猎物的刺激物体的攻击行为加剧。
