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首页> 外文期刊>Philosophical Transactions of the Royal Society of London, Series B. Biological Sciences >Memory inception and preservation in slime moulds: the quest for a common mechanism
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Memory inception and preservation in slime moulds: the quest for a common mechanism

机译：粘液模具中的记忆初始和保存：追求共同机制

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摘要

Learning and memory are indisputably key features of animal success. Using information about past experiences is critical for optimal decision-making in a fluctuating environment. Those abilities are usually believed to be limited to organisms with a nervous system, precluding their existence in non-neural organisms. However, recent studies showed that the slime mould Physarum polycephalum, despite being unicellular, displays habituation, a simple form of learning. In this paper, we studied the possible substrate of both short- and long-term habituation in slime moulds. We habituated slime moulds to sodium, a known repellent, using a 6 day training and turned them into a dormant state named sclerotia. Those slime moulds were then revived and tested for habituation. We showed that information acquired during the training was preserved through the dormant stage as slime moulds still showed habituation after a one-month dormancy period. Chemical analyses indicated a continuous uptake of sodium during the process of habituation and showed that sodium was retained throughout the dormant stage. Lastly, we showed that memory inception via constrained absorption of sodium for 2 h elicited habituation. Our results suggest that slime moulds absorbed the repellent and used it as a 'circulating memory'.
机译：学习和记忆毫无疑问地是动物成功的关键特征。使用有关过去经验的信息对于波动环境中的最佳决策至关重要。这些能力通常被认为是限于具有神经系统的生物，妨碍他们在非神经生物中的存在。然而，最近的研究表明，尽管是单细胞，但表现出习惯，习惯，一种简单的学习形式。在本文中，我们研究了粘液模具中短期和长期习惯的可能基材。我们使用6天的训练将粘液模具居住于钠，一种已知的驱蚊剂，并将它们转化为名为Sclerotia的休眠状态。然后将这些粘液模具复活并测试习惯。我们展示培训期间获得的信息通过休眠阶段保存，因为粘液模具仍然在一个月后休眠期后仍显示习惯。化学分析表明在习惯过程中连续摄取钠，并显示钠在整个休眠阶段保留。最后，我们展示了通过约束吸收的内存初始化2小时的习惯。我们的结果表明，粘液模具吸收了驱蚊器并用作“循环记忆”。

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