Depressive symptoms may be associated with semantic memory decline in elderly adults

Area of Science:

• Gerontology
• Neuropsychology
• Psychiatry

Background:

• Depressive symptoms are linked to cognitive decline, particularly in episodic memory.
• The impact of depression on semantic memory in elderly populations requires further investigation.

Purpose of the Study:

• To examine the association between depressive symptoms and semantic memory in community-dwelling elderly individuals.
• To compare semantic memory performance between elderly individuals with and without clinical depressive symptoms.

Main Methods:

• Utilized a battery of neuropsychological tests, including the Boston Nomination Test (BNT), verbal fluency tests, and cognitive screening tools.
• Assessed depressive symptoms using the Geriatric Depression Scale-30 (GDS-30) and Beck Depression Inventory-II.
• Compared semantic memory performance between a clinical group (with depressive symptoms) and a control group.

Main Results:

• A significant difference in performance was observed between groups solely on the Boston Nomination Test (BNT).
• A significant correlation was found between BNT performance and scores on the Geriatric Depression Scale-30 (GDS-30).
• Individuals with severe depressive symptoms exhibited poorer performance on the BNT compared to those with mild symptoms.

Conclusions:

• Depressive symptoms in elderly adults can adversely affect semantic memory.
• The severity of depressive symptoms is associated with a greater impairment in semantic memory functions, specifically word retrieval.