How Stress Affects Memory
Posted on 16th August 2018 at 20:54
In numerous different animals, cognitive ability, including learning and memory, is often negatively affected by stress. But not all individuals of a particular species are equally good at cognitive tasks to begin with, and they respond to the effects of stress in different ways.
Take pond snails – specifically Lymnaea stagnalis – for example. They, just like other animals (including humans), remember things about different aspects of their environment. They remember smells that are associated with good things to eat, for instance, as well as negative experiences which may be associated with the risk of being eaten themselves. But not all snails are equally good at remembering. Some snail populations, originating from different rivers or ditches, are much better at forming memories than others.