Compromised naturalistic action performance in amnestic mild cognitive impairment

Area of Science:

• Neuropsychology
• Cognitive Neuroscience
• Gerontology

Background:

• Routine naturalistic actions (NAs) are essential for daily living and maintaining functional autonomy.
• Amnestic mild cognitive impairment (aMCI) is a significant risk factor for dementia, necessitating a deeper understanding of its impact on everyday functioning.
• Investigating cognitive processes underlying NA performance in aMCI is crucial for developing interventions to promote independence and delay dementia.

Purpose of the Study:

• To systematically investigate the performance of familiar NAs in individuals with aMCI and healthy older adults.
• To examine the relationship between NA performance and key cognitive domains: episodic memory, semantic knowledge, and executive function.

Main Methods:

• A comparative study involving healthy older adults (n=24) and individuals with aMCI (n=24).
• Assessment of performance on two highly familiar NAs.
• Correlational analysis with standardized measures of episodic memory, semantic knowledge, and executive function.

Main Results:

• Executive function measures were associated with commission errors (performing incorrect actions).
• Episodic memory measures were linked to omission errors (failing to perform necessary actions).
• Both types of errors appear to involve a diverse range of cognitive processes, challenging previous assumptions of process purity.

Conclusions:

• Cognitive correlates of NA errors in aMCI may be more complex than previously modeled.
• A comprehensive understanding of cognitive underpinnings of NAs in aMCI can inform interventions to enhance functional autonomy and potentially delay dementia onset.
• NAs can serve as valuable tools in neurocognitive assessments for early detection of functional decline and differential diagnosis between healthy aging and aMCI.