Type 1 diabetes and working memory processing of emotional faces

Area of Science:

• Neuroscience
• Endocrinology
• Psychology

Background:

• Type-1 diabetes (T1D) is associated with executive function decline, particularly in working memory (WM).
• Emotional stimuli are known to influence WM capacity and processing efficiency.
• Understanding T1D's effect on cognitive functions, especially WM, is crucial for early intervention.

Purpose of the Study:

• To investigate the impact of T1D on visual working memory (WM) processing using emotional facial stimuli.
• To compare brain activation patterns between young T1D patients and healthy controls during a WM task.
• To explore potential compensatory mechanisms in T1D related to attention and WM.

Main Methods:

• fMRI was employed in a block design using a 2-back task to assess visual WM.
• Participants identified facial identities presented with neutral, happy, or fearful expressions.
• Behavioral data (response time, accuracy) and brain activation patterns were analyzed and compared between groups.

Main Results:

• Behavioral performance was comparable, though T1D patients exhibited slower response times.
• T1D patients showed more widespread prefrontal activation for neutral faces compared to controls.
• Emotional faces elicited distinct activation patterns: controls showed greater posterior activation, while T1D patients displayed increased prefrontal activation.

Conclusions:

• T1D alters brain activation patterns during visual WM tasks, particularly with emotional stimuli.
• Increased prefrontal activation in T1D patients may represent compensatory strategies for attention and WM.
• Periodic assessment of emotional parameters in T1D individuals could help anticipate cognitive impairments.