Stress sucks. It can affect your body and mind.
压力很糟糕。它会影响人的身心。
Previous research has shown that stress can even hinder our ability to remember. But these studies have typically focused on one stress at a time. What happens when we face multiple stresses?
之前的研究表明，压力甚至会影响我们的记忆能力。但这些研究通常一次只关注一种压力因素。当我们面对多重压力时会发生什么?
Researchers looked at pond snails, often used in memory research. They trained the snails to reduce how frequently they breathe out of water. They then tracked whether the snails remembered their training after being stressed. The snails’ memory was considered intact if they reduced their attempts to breathe when removed from water.
研究人员观察了经常用于记忆研究的池蜗牛。他们训练蜗牛减少在水中呼吸的频率。然后，他们追踪蜗牛在受到压力后是否还记得它们的训练。如果蜗牛离开水后减少了呼吸的次数，那么它们的记忆就是完整的。
Two common stressors—low levels of calcium, necessary for strong shells, and overcrowding by other snails—can happen in combination in the wild.
两种常见的压力因素——低水平的钙，这是坚固外壳所必需的，以及其他蜗牛的过度拥挤——可能在野外同时发生。
Individually, these stressors only blocked the formation of new long-term memories in the snails. But combined, they caused the snails to forget their training, that is, they prevented any new memories from being formed. The study is in the journal PLoS ONE.
单独来看，这些压力源只会阻碍蜗牛形成新的长期记忆。但当它们结合在一起，蜗牛就会忘记了它们的训练，也就是说，它们阻止了新的记忆的形成。这项研究发表在《公共科学图书馆·综合》杂志上。
It’s thought that these snails and mammals have similar responses to stress. Of course, when stressed out, we should remember to breathe more, not less.
人们认为这些蜗牛和哺乳动物对压力有相似的反应。当然，当压力过大时，我们应该记得多呼吸，而不是少呼吸。
Stress sucks. It can affect your body and mind.
Previous research has shown that stress can even hinder our ability to remember. But these studies have typically focused on one stress at a time. What happens when we face multiple stresses?
Researchers looked at pond snails, often used in memory research. They trained the snails to reduce how frequently they breathe out of water. They then tracked whether the snails remembered their training after being stressed. The snails’ memory was considered intact if they reduced their attempts to breathe when removed from water.
Two common stressors—low levels of calcium, necessary for strong shells, and overcrowding by other snails—can happen in combination in the wild.
Individually, these stressors only blocked the formation of new long-term memories in the snails. But combined, they caused the snails to forget their training, that is, they prevented any new memories from being formed. The study is in the journal PLoS ONE.
It’s thought that these snails and mammals have similar responses to stress. Of course, when stressed out, we should remember to breathe more, not less.
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