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The influence of object-image velocity change on perceived heading in minimal environments

journal contribution
posted on 2003-11-01, 00:00 authored by Christopher Best, R Day, Boris Crassini
When human observers move forward and rotate their eyes, a complex pattern of light flows across the retina. This pattern is referred to as retinal flow. A model has been proposed to explain how humans perceive their direction of self-movement (or heading) from (1) static depth, (2) direction of image motion, and (3) whether image velocity undergoes acceleration or deceleration (Wang & Cutting, 1999). However, findings from past research in which sparse or minimalist stimuli were used have suggested that not all of the information to which participants are sensitive is captured within the scope of this model. In particular it has been suggested that the magnitude or size of image velocity change may be of significance beyond simply whether image velocity could be categorized as speeding up (i.e., accelerating) or slowing down (i.e., decelerating). In two experiments, the influence of this factor on heading judgments under minimal conditions was investigated. Evidence was found in support of the idea that the rate of image velocity change can influence judgments of the direction of self-movement in minimalist conditions.

History

Journal

Perception and psychophysics

Volume

65

Issue

8

Pagination

1273 - 1284

Publisher

Psychonomic Society Inc

Location

Austin, Tex.

ISSN

1943-3921

eISSN

1943-393X

Language

eng

Notes

Later title: Attention, perception and psychophysics

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2003, Psychonomic Society, Inc.

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