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Assessment of Static Graviceptive Perception in the Roll-Plane using the Subjective Visual Vertical Paradigm

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Embeddedness of Earth's gravity in visual perception.

Abdul-Rahim Deeb^1,2, Fulvio Domini^3,4

¹Department of Psychological Brain Sciences, Johns Hopkins University, Baltimore, MD, USA.

Journal of Vision

|October 7, 2024

Summary

This summary is machine-generated.

Human perception of falling objects integrates sensory input with predictions based on Newtonian mechanics. This suggests our brains use internalized gravity to visually interpret projectile motion.

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Area of Science:

Cognitive Psychology
Physics
Visual Perception

Background:

Accurate perception of falling objects is crucial for everyday tasks like interception and avoidance.
Existing models struggle to fully explain how humans judge projectile motion, particularly under varying gravitational conditions.

Purpose of the Study:

To investigate the role of internalized gravity in human visual perception of falling objects.
To determine if perception is based on simple heuristics, representational momentum, or a combination of sensory data and physical predictions.

Main Methods:

Controlled experiments were designed to meticulously manage the information available to participants observing falling objects.
Participants' judgments of projectile motion were recorded under varying simulated gravitational conditions across four distinct experiments.

Main Results:

Perceptual judgments of falling objects were not solely explained by simple heuristics or representational momentum.
Results indicated that human perception is influenced by both immediate sensory information and predictive models of gravity.

Conclusions:

Human perception of projectile motion relies on an interplay between sensory input and predictions constrained by internalized physical laws, specifically gravity.
These findings underscore the significance of internalized physical constraints in shaping visual perception of dynamic events.