Detecting Changes in Visuospatial Executive Function in Mild Cognitive Impairment
Author Information
Author(s): Papp Kathryn V., Snyder Peter J., Maruff Paul, Bartkowiak Jennifer, Pietrzak Robert H.
Primary Institution: University of Connecticut
Hypothesis
Poor performance on the Groton Maze Learning Test in older adults with aMCI would reflect predominantly dysfunction of component spatial memory processes.
Conclusion
Individuals with aMCI showed compromised performance on a task of complex visuospatial executive function, likely due to difficulties in initial strategy formulation during early visual learning.
Supporting Evidence
- Individuals with aMCI made more exploratory errors than healthy controls.
- The learning curve slope was four times steeper for controls than for individuals with aMCI.
- Participants with aMCI made significantly more rule-break errors across learning trials.
Takeaway
This study looked at how well people with memory problems can learn to navigate a maze, finding that they struggle more than healthy people.
Methodology
Participants completed a hidden maze learning test to assess visuospatial executive function and learning.
Potential Biases
Potential bias due to the exclusion of individuals with comorbid medical, neurologic, or psychiatric conditions.
Limitations
The study's well-characterized sample may not be generalizable to the broader population of individuals with aMCI who often present with comorbidities.
Participant Demographics
156 elderly adults aged 55 to 90, with 62 diagnosed with aMCI and 94 healthy controls.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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