Microsaccades mediate perceptual alternations in Monet's "Impression, sunrise"

Area of Science:

• Visual perception
• Neuroscience
• Art observation

Background:

• Troxler fading causes stationary images to disappear during sustained fixation, especially when luminance matches the background.
• Microsaccadic (eye movement) variations previously explained fading in simple stimuli like Gabor patches.

Purpose of the Study:

• To investigate if microsaccade dynamics affect Troxler fading in representational art.
• To determine if findings from simple stimuli generalize to complex visual art.

Main Methods:

• Participants fixated a central spot while viewing a Gabor patch or Monet's "Impression, Sunrise."
• Subjects reported perceived fading or intensification via button presses.
• High-precision eye-tracking recorded microsaccade rates during the task.

Main Results:

• Microsaccade rates increased before perceived intensification of stimuli.
• Microsaccade rates decreased before perceived fading of stimuli.
• This pattern held true for both Gabor patches and the sun in "Impression, Sunrise."

Conclusions:

• Microsaccade dynamics play a role in reversing and preventing Troxler fading, even with complex art.
• Oculomotor behavior contributes to how viewers perceive Impressionist art, influencing the experience of fading and intensification.