Spatial distribution of the attentional blink

Area of Science:

• Cognitive Psychology
• Neuroscience
• Visual Perception

Background:

• The attentional blink (AB) is a well-documented phenomenon in cognitive psychology.
• It describes the impaired ability to detect a second target when it is presented shortly after a first target within a rapid serial visual presentation (RSVP) stream.
• Understanding the spatial dynamics of the AB is crucial for refining theories of attention.

Purpose of the Study:

• To investigate the spatial distribution of the attentional blink (AB).
• To examine how the distance between targets influences the AB.
• To test the consistency of findings with lateral inhibition theory.

Main Methods:

• Subjects viewed rapid serial visual presentation (RSVP) streams of characters.
• Participants searched for a target digit.
• A second target (orientation singleton or digit) was presented at varying distances from the first target.

Main Results:

• Attentional blink (AB) significantly impaired performance on the second target.
• The AB effect was strongest at distances somewhat removed from the first target's location.
• Performance improved as the distance between targets increased.

Conclusions:

• The spatial distribution of the attentional blink (AB) is not uniform.
• Findings support lateral inhibition theory as an explanation for the AB.
• The study resolves fundamental questions regarding the spatial extent of attentional interference.