Investigating mechanisms of the attentional repulsion effect: A diffusion model analysis

Area of Science:

• Cognitive Neuroscience
• Visual Perception
• Decision Making

Background:

• The attentional repulsion effect (ARE) involves subjective spatial expansion outside focal attention, potentially linked to visual receptive field changes.
• The diffusion decision model (DDM) quantifies decision-making by decomposing response times into evidence accumulation, caution, bias, and encoding/execution.
• Distinguishing attentional vs. decisional drivers of ARE is crucial for understanding spatial attention mechanisms.

Purpose of the Study:

• To investigate the attentional and decisional factors contributing to the attentional repulsion effect (ARE).
• To utilize the diffusion decision model (DDM) to independently assess perceptual and decision-level contributions to ARE.
• To clarify the underlying mechanisms of ARE and their implications for spatial attention.

Main Methods:

• Employing the diffusion decision model (DDM) to analyze choice and response times.
• Interpreting evidence accumulation rate as perceptual changes and response bias as decision-level changes.
• Utilizing cueing manipulations to independently assess attentional and decisional influences on ARE.

Main Results:

• Evidence accumulation rate changes were linked to perceptual stimulus representation.
• Response bias changes were associated with decision-level processes.
• Cueing manipulations differentially affected these DDM parameters, providing insight into ARE drivers.

Conclusions:

• The attentional repulsion effect (ARE) appears to be influenced by both perceptual and decision-making processes.
• Independent analysis of DDM parameters helps disentangle attentional and decisional contributions to ARE.
• This research enhances understanding of the complex interplay between attention, perception, and decision-making in spatial awareness.