Healthy brain aging

12 important questions on Healthy brain aging

What are most positive feelings at old age associated with?

A lower risk of natural and all-cause mortality and seems to be mediated by social networks

When is decline in speed processing start?

From 20 onward

When does brain volume decline?

From age 50, and after 80 there is stronger decline with a total volume loss of 10%
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How can the normal impairments be reversed?

Increase adult hippocampal neurogenesis

How may decreseased processing speed be explained?

White matter volume loss

What are a few compensation techniques in the aging brain?

Compensation by increasing frontal activity
Hemispheric asymmetry reduction
Compensation related utilization of neural circuits hypothesis, so they recruit additional brain regions that do not necessarily belong to the contralateral hemisphere

Which lobes are affected the most in volume reduction?

Frontal and parietal lobes

What are advantages of aging?

Improved emotional stability
Decreased levels of personality trait neuroticism
Increased agreeableness
Wisdom

What are the two opposing models about emotion regulating?

Aging brain model: Positive effect is due to age-related decline in amygdala
Cognitive control: They have greater focus on regulating emotion

What is a better model and why?

The cognitive control hypothesis, since adults show greater prefrontal cortex activity while engaging in emotion processing tasks

What are neurocorrelates of wisdom?

Prominently prefrontal cortex but may involve better balance between primitive brain regions and newer ones

How religious involvement decrease aging effects?

Help people cope with the stress and so may act as a buffer against hippocampal atrophy and cognitive decline

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