Assessing cognitive decline in the aging brain: lessons from rodent and human studies

Area of Science:

• Neuroscience
• Gerontology
• Cognitive Psychology

Background:

• Increasing global life expectancy highlights the societal impact of age-related dysfunction.
• Cognitive decline and neurological disorders are strongly linked to aging.
• Age-related cognitive changes affect memory and brain structures, even without dementia.

Purpose of the Study:

• To review age-related brain changes and cognitive decline.
• To integrate findings from human and animal research.
• To compare cognitive testing methods across preclinical and clinical studies.

Main Methods:

• Literature review of preclinical and clinical studies on aging and cognition.
• Analysis of cognitive assessment tools, from traditional to virtual reality paradigms.
• Comparison of behavioral paradigms in research and clinical trial enrollment.

Main Results:

• Significant differences exist in methodologies used in preclinical versus clinical aging research.
• Cognitive tests in humans and rodents show parallels but often lack direct comparison.
• Virtual reality paradigms offer novel approaches for assessing age-related cognitive changes.

Conclusions:

• Standardizing cognitive assessment methods is crucial for translational research in aging.
• Bridging the gap between animal models and human studies can accelerate understanding of cognitive aging.
• This review provides a framework for harmonizing research approaches to combat age-related cognitive decline.