A new study has revealed that people with long Covid accompanied with neurological symptoms such as brain fog have less activity in certain brain regions normally used for memory tasks. The study, published in the journal `Neurology`, also showed that people with long Covid have poorer scores on tests of dexterity and motor endurance than those without Covid. They also report more negative feelings, such as anger and sadness, and higher levels of stress, and they have lower scores for life satisfaction compared to those who never had Covid.

In addition, they have higher scores for depression, anxiety, fatigue and pain than the control group. People in the post-Covid group who have greater changes in their brain activity are more likely to have poorer scores in many of these symptom domains.