Episodic-like memory during cache recovery by scrub jays
Episodic-like memory during cache recovery by scrub jays
复制标题
DOI：
10.1038/26216
复制
发表时间：
1998-09-17
期刊：
影响因子：
64.8
通讯作者：
Dickinson, A
中科院分区：
文献类型：
--
作者：
Clayton, NS;Dickinson, A
对过去经历的回忆使我们能够回忆起一个特定的事件是什么，以及它发生的地点和时间（1,2），这种记忆形式被认为是人类独有的(3)。然而，众所周知，储存食物的鸟类记住它们的贮藏物的空间位置（4-6）和内容（6-9）。此外，食物储存动物根据食物储存的易腐性调整其贮藏和恢复策略（10-13），这表明它们对时间因素很敏感。在这里，我们表明，灌木松鸦（Aphelocoma coerulescens）通过允许它们恢复易腐的“蜡虫”（蜡蛾幼虫）和不易腐的花生来记住“何时”储存食物，这些食物是它们之前储存在视觉空间不同的地方的，当它们被允许在缓存后不久恢复它们最喜欢的食物——新鲜的蜡虫时，松鸦优先搜索它们喜欢的食物。然而，它们很快就学会了在蠕虫腐烂一段较长的时间后避免寻找蠕虫。松鸦的恢复偏好显示了特定食物被储存的地点和时间的记忆，从而满足了非人类动物的情景记忆的行为标准。
The recollection of past experiences allows us to recall what a particular event was, and where and when it occurred(1,2), a form of memory that is thought to be unique to humans(3). It is known, however, that food-storing birds remember the spatial location(4-6) and contents(6-9) of their caches. Furthermore, food-storing animals adapt their caching and recovery strategies to the perishability of food stores(10-13), which suggests that they are sensitive to temporal factors. Here we show that scrub jays (Aphelocoma coerulescens) remember 'when' food items are stored by allowing them to recover perishable 'wax worms' (wax-moth larvae) and non-perishable peanuts which they had previously cached in visuospatially distinct sites, Jays searched preferentially for fresh wax worms, their favoured food, when allowed to recover them shortly after caching. However, they rapidly learned to avoid searching for worms after a longer interval during which the worms had decayed. The recovery preference of jays demonstrates memory of where and when particular food items were cached, thereby fulfilling the behavioural criteria for episodic-like memory in non-human animals.