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Brain Fog is Seen Among Animals

by Colleen Fleiss on Aug 11 2022 11:55 PM
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Brain fog impairment which affects learning, memory and problem-solving abilities is also observed across animal species.

Brain Fog is Seen Among Animals
Brain fog impairment which affects learning, memory and problem-solving abilities is also observed across animal species.
The reasons for this are variable, including damage by the parasite, immune response to infection, lack of motivation of sick individuals to perform a cognitive task, malnutrition, and even alterations to the host microbiome, they wrote in a paper published in the journal Trends in Ecology and Evolution.

“I think one surprising thing for me was how little is known. We’re seeing an accelerated emergence of all of these infectious diseases, and yet we know very little about how disease might affect cognition and the implications of this for wild animals as well as for humans,” said lead author Andrea K. Townsend, associate professor of biology from Hamilton College.

Cognitive Impairment in Animals


“This is really a bad outcome, if you are a bee, because foraging success depends on the ability to efficiently find the most productive flowers,” Townsend added. This could have negative consequences for bee populations, and also for the flowers, which rely on bees for pollination.

As wild animals continue to be affected by a changing climate and disturbed environments, cognitive impairment may exacerbate the effects of the disease. In disturbed environments, animals tend to be stressed, and stressed animals are more likely to get sick, which could impair their cognitive abilities.

At the same time, these cognitive abilities could be especially important in these changing, stressful environments, where cognitive abilities (like flexible decision-making and innovation) could give them a behavioral buffer.

“So, here you might have a snowball effect where animals in stressed environments are more likely to get sick and their cognitive abilities are impaired. Then they are less able to deal with these stressful, changing environments because of their impaired cognitive abilities. It could increase the costs of environmental change for some wild animals,” Townsend explained.

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