The configural properties of task stimuli do influence vigilance performance

Area of Science:

• Cognitive Psychology
• Neuroscience
• Human Factors

Background:

• Sustained attention is crucial for tasks requiring vigilance.
• Visual display configuration may influence attentional performance.
• Understanding display hierarchy is important for cognitive tasks.

Purpose of the Study:

• To investigate the effect of global display configurations on sustained attention.
• To determine if a configural superiority effect exists in vigilance tasks.
• To provide a behavioral basis for future neuroimaging studies.

Main Methods:

• Sixty-one participants completed a sustained attention task with feature discrimination.
• Participants were divided into three groups with different global display configurations (circle, broken circle, reconnected figure).
• Performance was measured using hit rates and A' scores.

Main Results:

• The group with a broken circle display (no discernible global element) showed impaired performance.
• Groups with clear global shapes (circle, reconnected figure) performed better.
• A configural superiority effect was observed, with global shapes improving performance.

Conclusions:

• The presence of a global shape in a visual display enhances sustained attention performance.
• Task difficulty and hierarchical display aspects influence vigilance and potentially cerebral activation.
• Vigilance display configuration is critical for understanding sustained attention and its hemispheric lateralization.