Previous attentional set can induce an attentional blink with task-irrelevant initial targets

Area of Science:

• Cognitive Psychology
• Neuroscience
• Visual Attention

Background:

• The attentional blink (AB) impairs identifying a second target in rapid serial visual presentation (RSVP) due to processing the first target.
• Contingent capture suggests task-irrelevant stimuli sharing features with targets can also trigger an AB.

Purpose of the Study:

• To investigate if task-irrelevant stimuli, lacking shared features and response requirements, can still induce an attentional blink.
• To determine if prior task relevance influences the AB effect of irrelevant stimuli.

Main Methods:

• An RSVP experiment was designed to present task-irrelevant first targets.
• These targets did not require a response and lacked shared features with the subsequent target.
• The study manipulated the prior task relevance of these irrelevant stimuli.

Main Results:

• Task-irrelevant stimuli induced an attentional blink even without response requirements or feature overlap.
• This effect occurred when the irrelevant stimuli were task-relevant in a preceding block of trials.
• This indicates that previous attentional sets can prime irrelevant stimuli to capture attention.

Conclusions:

• Attentional set, established in prior trials, can render previously relevant stimuli potent distractors.
• Irrelevant stimuli can capture attention based on learned relevance, not just current task demands or feature similarity.
• This finding deepens our understanding of attentional control and the flexibility of attentional capture.