It makes sense, so I see it better! Contextual information about the visual environment increases its perceived...

Area of Science:

• Cognitive Psychology
• Neuroscience
• Visual Perception

Background:

• Predictive coding theories suggest prior knowledge sharpens visual processing.
• Few studies have directly tested if expectations qualitatively alter perception.

Purpose of the Study:

• To investigate how expectations influence the perceived sharpness of visual stimuli.
• To determine if prior experience and context affect perceived image sharpness.

Main Methods:

• A perceptual matching task was used, where participants adjusted image blur.
• Image predictability was manipulated (predictable vs. unpredictable content).
• Explicit sharpness judgments were also collected in a third experiment.

Main Results:

• Predictable objects and scenes were perceived as sharper than unpredictable ones at equal blur levels.
• This effect was confirmed through explicit sharpness judgments.
• Findings support the 'sharpening' mechanism in predictive coding.

Conclusions:

• Expectations enhance the perceived sharpness of visual signals.
• Prior knowledge and contextual information improve both understanding and perception of the visual environment.