Human Vision Reconstructs Time to Satisfy Causal Constraints.

Area of Science:

• Cognitive Psychology
• Neuroscience
• Perception

Background:

• Perception aims to infer the most likely source of sensory input.
• Unisensory perception of temporal order is typically assumed to be direct, not inferential.
• The order of sensory signals usually dictates the perceived order of events.

Purpose of the Study:

• To investigate the role of causality in the perception of temporal order.
• To demonstrate a novel perceptual illusion related to event timing.
• To challenge the assumption that temporal order perception is solely based on sensory arrival sequence.

Main Methods:

• Three experiments were conducted with 607 adult participants.
• Participants viewed a three-item sequence (ACB) and were asked about event timings.
• The study analyzed participants' points of subjective simultaneity for events B and C.

Main Results:

• A novel perceptual illusion demonstrated causality reversing perceived temporal order.
• Participants' subjective simultaneity points shifted, making the assumed cause (B) appear earlier and the effect (C) later.
• This effect persisted despite full attention and repeated viewings.

Conclusions:

• Causality actively influences real-time event timing perception.
• The perceived temporal order is not solely determined by the arrival order of sensory signals.
• The findings cannot be explained by postperceptual distortion, lapsed attention, or saccades.