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Perceived Object Trajectory Is Influenced by Others' Tracking Movements.

Colin J Palmer¹, Colin W G Clifford¹

¹School of Psychology, UNSW Sydney, NSW 2052, Australia.

Current Biology : CB

|July 18, 2017

Summary

Others' gaze tracking influences our perception of object depth and movement. This social visual information affects our reality, even with conflicting cues, demonstrating a fundamental link between social cues and vision.

Keywords:

depth perception gaze perception motion perception social attention social vision

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Area of Science:

Cognitive Science
Neuroscience
Social Psychology

Background:

Understanding others' gaze is crucial for social development and interaction.
Gaze direction is determined by head position, eye deviation, and vergence.
The impact of observing others' gaze on one's own visual perception is unknown.

Purpose of the Study:

To investigate whether observing others' gaze tracking behavior influences an individual's perception of object depth and movement.
To determine the extent to which this influence affects visual reality.

Main Methods:

Participants observed physical objects and apparent motion displays while others engaged in tracking behavior.
Conflicting visual cues (e.g., size) were presented to test the robustness of the effect.
Judgments of object trajectory and causal interactions were recorded.

Main Results:

Perceived object depth and movement were significantly influenced by others' tracking behavior.
This effect persisted even with conflicting size cues and generalized to apparent motion and causality judgments.
Object-level motion of the tracking agent (head motion) had the primary influence, followed by eye and low-level motion.
Similar effects were induced by non-face objects exhibiting tracking behavior, suggesting distal coupling.

Conclusions:

Social visual information fundamentally impacts our own visual perception.
Our constructed visual reality is partly determined by what others are observing.
Mechanisms of distal coupling may underlie the integration of social gaze cues into visual processing.