The complex interaction between anxiety and cognition: insight from spatial and verbal working memory

Area of Science:

• Cognitive Psychology
• Neuroscience
• Emotion Research

Background:

• Anxiety disrupts cognitive functions, including working memory (WM).
• Previous research suggests cognitive load influences anxiety's impact on verbal WM.
• Translational anxiety induction methods (e.g., risk of shock) are used to study WM performance.

Purpose of the Study:

• To investigate how cognitive load affects anxiety-induced impairments in both spatial and verbal working memory.
• To examine the differential impact of anxiety on task modalities across varying difficulty levels.
• To understand the interaction between anxiety, cognitive load, and working memory performance.

Main Methods:

• Subjects performed spatial and verbal n-back tasks of increasing difficulty (1, 2, 3-back).
• Anxiety was induced by the risk of shock, with startle reflex used as a measure.
• Performance was compared under conditions of safety versus anxiety induction.

Main Results:

• Induced anxiety differentially impacted verbal and spatial WM performance.
• Low and medium-load verbal WM were more susceptible to anxiety than high-load.
• Spatial WM was impaired by anxiety regardless of task difficulty.
• Anxiety correlated with performance impairment in both verbal and spatial WM.

Conclusions:

• Anxiety's effect on WM varies by modality and cognitive load.
• High-load tasks may engage top-down control, but spatial WM is also affected by attentional shifts due to anxiety.
• Findings inform theories of emotion-cognition interactions and potential clinical interventions for anxiety-related cognitive deficits.