Wednesday January 23, 2019

Brain’s memory area might be associated with anxiety and depression

Addiction, for example, could be linked to deficits of approach motivation. Anxiety and depression on the other hand could be linked to avoidance behaviours

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Sleep spindles can help in memory retention. Pixabay
Brain's memory can be affected by Depression and Anxiety. Pixabay

An area of the brain, commonly linked with memory and dementia, could also yield important clues about a range of mental health illnesses including addiction, anxiety and depression, a study has found.

The area, known as hippocampus, is a seahorse-shaped structure located deep inside the brain. As part of the limbic system, it plays an important role in memory processing and spatial cognition, including how mammals learn to understand and navigate their environment. Hippocampus have been long known for its role in memory and dementia, especially in relation to Alzheimer’s disease. In Alzheimer’s patients for instance, this region is one of the first areas of the brain to suffer damage.

Victimization in early school days leads to anxiety. Pixabay
Anxiety can cause avoidance behaviour. Pixabay

The study, published in the journal Current Biology, revealed that because hippocampus plays a role in basic motivational behaviour, it may also offer important insights into a range of mental health illnesses. Addiction, for example, could be linked to deficits of approach motivation. Anxiety and depression on the other hand could be linked to avoidance behaviours, all of which could manifest itself in this part of the brain, Ito said.

Also Read: Women with larger waistline are at higher risk of anxiety

“Some patients have lesions to certain areas of this part of the brain, so hopefully we can assess them to see what particular aspects of approach avoidance behaviour may or may not be impacted,” the researchers said. IANS

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Distress May Spike up Risk of Dementia

For the study, the team included 6,807 Danish participants aged 60 years on average

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Extreme distress increases risk for dementia: Study. Pixabay

Men and women who are distressed in midlife could be at higher risk of developing dementia in their old age, suggests a new study.

The study showed that vital exhaustion, which can be perceived as an indicator of psychological distress, is a risk factor for future risk of dementia.

Psychological distress is potentially linked to the risk of dementia through neurological and cardiovascular mechanisms.

The findings, led by researchers from the University of Copenhagen in Denmark, revealed that for each additional symptom of vital exhaustion, the risk of dementia rose by two per cent.

While participants reporting five to nine symptoms had a 25 per cent higher risk of dementia than those with no symptoms, those reporting 10 to 17 symptoms had a 40 per cent higher risk of dementia compared with not having symptoms.

However, the researchers are yet not aware of "exactly how anticholinergics might cause dementia", the researchers said.
Representational Image- dementia, Pixabay

Importantly, physiological stress response, including cardiovascular changes and excessive production of cortisol over a prolonged period, may also contribute to linking psychological distress with an increased risk of dementia, revealed the study published in the Journal of Alzheimer’s Disease.

“Stress can have severe and harmful consequences not just for our brain health, but our health in general. Cardiovascular risk factors are well-known modifiable risk factors for dementia, and in some countries, a stagnation or even a decreasing incidence of dementia has been observed,” said Sabrina Islamoska, postdoctoral student from the varsity.

Also Read- CBSE to Issue Module to Deter Students From Cheating

For the study, the team included 6,807 Danish participants aged 60 years on average.

Psychological distress is an important risk factor that should receive more focus when considering prevention initiatives in relation to later dementia, the team said. (IANS)