Effect of motion coherence on time perception relates to perceived speed

Area of Science:

• Cognitive Psychology
• Neuroscience
• Visual Perception

Background:

• Time perception is a complex cognitive function.
• Visual cues, such as motion, can influence temporal judgments.
• The role of motion coherence in time perception remains underexplored.

Purpose of the Study:

• To investigate how the coherence of moving visual objects affects time perception.
• To determine if perceived speed mediates the relationship between motion coherence and perceived duration.

Main Methods:

• Participants completed a temporal bisection task using stimuli with four line segments.
• Stimuli exhibited either coherent (diamond outline) or incoherent motion behind occluders.
• A speed comparison task was also performed to assess perceived speed.

Main Results:

• Perceived duration of coherent motion stimuli varied (longer or shorter) compared to incoherent stimuli, contingent on configuration.
• Differences in perceived speed between coherent and incoherent motion aligned with differences in perceived duration.
• This suggests perceived speed acts as a mediator in the effect of motion coherence on time perception.

Conclusions:

• Motion coherence demonstrably influences perceived duration.
• The effect of motion coherence on time perception appears to be mediated by perceived speed.
• Findings support the involvement of global motion processing in the mechanisms of time perception.