Attention-based perceptual learning increases binocular rivalry suppression of irrelevant visual features

Area of Science:

• Cognitive Neuroscience
• Visual Perception

Background:

• Perceptual learning improves task performance with experience.
• Attention is crucial for perceptual learning, potentially by suppressing irrelevant information.
• This suppression aids in efficient noise exclusion during learning.

Purpose of the Study:

• To investigate if training selectively suppresses task-irrelevant visual information.
• To determine if attention-based suppression plays a role in efficient noise exclusion.
• To explore the overlap between attentional mechanisms and binocular rivalry.

Main Methods:

• Participants underwent a 5-day visual speed-discrimination training task.
• Post-training, motion coherence thresholds assessed sensitivity to relevant, irrelevant, and neutral motion directions.
• Binocular rivalry measured perceptual dominance for different motion direction combinations.

Main Results:

• Training selectively enhanced sensitivity to task-relevant motion directions.
• Task-irrelevant motion directions showed increased suppression during binocular rivalry.
• Perceptual dominance of irrelevant features was selectively decreased post-training.

Conclusions:

• Task-irrelevant information interfering with learning is more strongly suppressed.
• Visual attention and binocular rivalry share overlapping neural mechanisms.
• Perceptual learning involves active suppression of distracting information.