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A Machine Learning Approach to Design an Efficient Selective Screening of Mild Cognitive Impairment
Published on: January 11, 2020
Cognitive function in normal aging and in older adults with mild cognitive impairment
Soledad Ballesteros1, Julia Mayas, José Manuel Reales
1Universidad Nacional de Educación a Distancia, Spain. mballesteros@psi.uned.es
Psicothema
|January 23, 2013
Summary
Aging affects cognitive functions like processing speed and memory. Mild cognitive impairment (MCI) shows deficits in these areas, particularly in implicit memory, suggesting early attention problems.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Gerontology
Background:
- Investigates the impact of normal and pathological aging on cognitive functions.
- Focuses on processing speed, executive control, and implicit memory.
- Compares healthy aging with mild cognitive impairment (MCI).
Purpose of the Study:
- To examine how normal and pathological aging affect key cognitive functions.
- To identify specific cognitive deficits associated with mild cognitive impairment.
- To explore potential early markers of pathological aging.
Main Methods:
- Employed a comparative study design with three groups: young adults, healthy older adults, and elders with MCI.
- Utilized tasks measuring simple/choice reaction time, executive control (Wisconsin Card Sorting Test), and implicit memory.
- Assessed implicit memory for attended and unattended stimuli during encoding.
Main Results:
- Mild cognitive impairment (MCI) group exhibited significant declines in processing speed and executive control.
- Healthy participants (young and older) demonstrated repetition priming for attended stimuli.
- The MCI group failed to show repetition priming for attended objects, unlike healthy controls.
Conclusions:
- The absence of repetition priming in the MCI group mirrors findings in Alzheimer's disease (AD) patients.
- Suggests an early deficit in selective attention in individuals with MCI.
- Proposes that this attention deficit may serve as a biomarker for pathological aging.
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