Clinical Manifestations.

Area of Science:

• Neuroscience
• Psychology
• Gerontology

Background:

• Alzheimer's Disease (AD) is characterized by explicit memory impairments but preserved implicit memory.
• Implicit memory, a form of unconscious recall, plays a crucial role in daily functioning.
• Evaluative conditioning, a type of implicit memory, involves emotional responses to stimuli paired with emotional content.

Purpose of the Study:

• To assess the preservation of evaluative conditioning in older adults with and without Alzheimer's Disease (AD).
• To determine if individuals with type 2 diabetes, a risk factor for AD, show differences in implicit memory.
• To explore the utility of evaluative conditioning as a tool for assessing emotional learning in dementia.

Main Methods:

• Older adults (65+) with AD, type 2 diabetes (DB), or no diagnoses (ND) participated.
• Participants underwent an evaluative conditioning task involving fictitious book covers and story summaries.
• Performance was assessed through implicit emotional prediction and explicit story recall.

Main Results:

• Group AD is expected to show deficits in explicit recall but intact implicit emotional prediction.
• Group DB is anticipated to perform similarly to Group ND on implicit tasks, with potential deficits in explicit memory.
• The study aims to confirm the dissociation between explicit and implicit memory in AD.

Conclusions:

• Evaluative conditioning is expected to be preserved in individuals with AD, demonstrating intact implicit emotional learning.
• This research may establish evaluative conditioning as a valuable method for assessing emotional processing in dementia.
• Findings will contribute to understanding memory function in neurodegenerative diseases and diabetes.