Dual memory task impairment in E280A presenilin-1 mutation carriers.
Sarah E MacPherson1, Mario A Parra2, Sonia Moreno3
1Human Cognitive Neuroscience, Department of Psychology, University of Edinburgh, UK Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, UK.
Journal of Alzheimer'S Disease : JAD
|October 30, 2014
Summary
Individuals with the E280A presenilin-1 mutation, a genetic cause of Alzheimer's disease (AD), show significant dual-task deficits. This impairment in coordinating two tasks may signal early AD detection in mutation carriers.
Area of Science:
- Neuroscience
- Genetics
- Cognitive Psychology
Background:
- Alzheimer's disease (AD) patients exhibit dual-task impairments, struggling to perform tasks concurrently.
- Individuals with the E280A presenilin-1 mutation, even before meeting AD criteria, show similar dual-task deficits.
- It remains unclear if this deficit is task-specific or indicative of a general coordination impairment.
Purpose of the Study:
- To investigate whether the dual-task deficit in E280A presenilin-1 mutation carriers is task-specific or a general coordination problem.
- To determine if dual-task performance can serve as an early marker for AD in presenilin-1 mutation carriers.
Main Methods:
- A study involving 31 carriers of the E280A presenilin-1 gene mutation and 38 non-carriers.
- Participants performed two memory tasks simultaneously.
- Comparison of dual-task performance between mutation carriers and non-carriers.
Main Results:
- Familial AD carriers demonstrated significant decrements in dual-task performance compared to non-carriers.
- The dual-task deficit was observed even in individuals who did not yet meet the clinical criteria for AD.
Conclusions:
- The findings suggest a general deficit in the ability to coordinate tasks in individuals with the E280A presenilin-1 mutation.
- This dual-task coordination deficit may serve as a valuable clinical marker for the early detection of AD associated with the E280A presenilin-1 mutation.
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