Age-related differences in cerebrovascular responses to cognitive stimulation using a novel method
Lucy C Beishon1, Ernel Boadi1, Claire Al Williams1
1Department of Cardiovascular Sciences, University of Leicester, Leicester, UK.
Summary
Healthy older adults show increased cerebrovascular responses to cognitive tasks. This study used an objective two-parameter method to analyze brain blood flow changes during cognitive stimulation in aging individuals.
Area of Science:
- Neuroscience
- Gerontology
- Physiology
Background:
- Aging impacts cerebrovascular function.
- Cognitive stimulation can reveal age-related changes in brain blood flow.
Purpose of the Study:
- To investigate how age affects cerebrovascular responses during cognitive tasks.
- To utilize an objective two-parameter method for assessing these responses.
Main Methods:
- Applied a previously validated two-parameter method to a new dataset.
- Analyzed cerebrovascular responses in 69 healthy participants across five cognitive tasks.
- Calculated the cumulative response rate (CRR) across tasks and hemispheres.
Main Results:
- Age significantly influenced cerebrovascular responses (adjusted odds ratio: 1.02).
- Cognitive tasks also had a significant effect (p = 0.002).
- Increasing age correlated with a higher CRR (adjusted odds ratio: 1.04), indicating heightened responses.
Conclusions:
- Healthy older adults exhibit increased cerebrovascular responses to cognitive testing.
- The findings highlight age-related alterations in brain blood flow regulation during cognitive demand.
