Statistical learning of target location guides attention proactively.

Area of Science:

• Cognitive Psychology
• Neuroscience
• Perception

Background:

• The human perceptual system excels at identifying statistical regularities.
• Location probability learning (LPL) demonstrates faster responses to targets at frequently attended locations.
• Previous research on whether LPL proactively or reactively guides attention yielded conflicting results.

Purpose of the Study:

• To investigate whether attention is proactively aligned with high-probability target locations or reactively allocated.
• To address potential caveats in previous studies examining the transfer of spatial attentional bias.

Main Methods:

• Two experiments were conducted involving a search task with a frequently attended location during a learning phase.
• An extinction phase followed, where all target locations became equiprobable.
• Letter-probe trials were interspersed during both learning and extinction phases to assess attentional bias.

Main Results:

• Location probability learning (LPL) acquired during the search task transferred to the letter-probe task.
• Participants continued to prioritize the previously high-probability location during extinction, even when informed of the change.
• This prioritization persisted despite explicit instructions to disregard the previous bias and use a precue.

Conclusions:

• Location probability learning (LPL) guides attention proactively.
• Attentional bias acquired through LPL is inflexible and persists even when the statistical regularity is removed.
• Findings suggest that attention is not merely reactively allocated but proactively and rigidly aligned with learned probabilities.