Action-induced blindness with lateralized stimuli and responses

Area of Science:

• Cognitive Psychology
• Neuroscience
• Human Factors

Background:

• Dual-task performance reveals interference between response selection/execution and visual encoding, termed action-induced blindness.
• The influence of stimulus and response lateralization on action-induced blindness remains incompletely understood.

Purpose of the Study:

• To investigate how the lateralization of stimuli and responses affects action-induced blindness.
• To examine the cross-talk effects between response preparation and visual encoding in dual-task scenarios.

Main Methods:

• Four experiments involved participants responding to auditory stimuli (S1) with lateralized hand presses (R1) while simultaneously identifying visual stimuli (S2) presented in either visual field.
• Analysis focused on response preparation, stimulus lateralization, and their impact on visual encoding accuracy and response execution.

Main Results:

• Response preparation generally impaired concurrent visual encoding, confirming action-induced blindness.
• Action-induced blindness occurred irrespective of whether stimuli were presented ipsilaterally or contralaterally to the response hand.
• Response preparation facilitated visual stimulus processing at ipsilateral locations, suggesting action-centered attention.
• A correspondence effect between stimulus (S2) and response (R1) was observed, complementing the R1-S2 correspondence effect on visual encoding.

Conclusions:

• Action-induced blindness is a robust phenomenon influenced by response preparation.
• Lateralization of stimuli does not eliminate action-induced blindness but interacts with response preparation.
• Acting while perceiving can yield simultaneous beneficial (e.g., action-centered attention) and detrimental effects on cognitive performance.