Seeing the World Topsy-Turvy: The Primary Role of Kinematics in Biological Motion Inversion Effects

Physical inversion of whole or partial human body representations typically has catastrophic consequences on the observer's ability to perform visual processing tasks. Explanations usually focus on the effects of inversion on the visual system's ability to exploit configural or structural...

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Main Authors: Sue-Anne Fitzgerald, Anna Brooks, Rick van der Zwan, Duncan Blair
Format: Article
Language:English
Published: SAGE Publishing 2014-04-01
Series:i-Perception
Online Access:https://doi.org/10.1068/i0612
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author Sue-Anne Fitzgerald
Anna Brooks
Rick van der Zwan
Duncan Blair
author_facet Sue-Anne Fitzgerald
Anna Brooks
Rick van der Zwan
Duncan Blair
author_sort Sue-Anne Fitzgerald
collection DOAJ
description Physical inversion of whole or partial human body representations typically has catastrophic consequences on the observer's ability to perform visual processing tasks. Explanations usually focus on the effects of inversion on the visual system's ability to exploit configural or structural relationships, but more recently have also implicated motion or kinematic cue processing. Here, we systematically tested the role of both on perceptions of sex from upright and inverted point-light walkers. Our data suggest that inversion results in systematic degradations of the processing of kinematic cues. Specifically and intriguingly, they reveal sex-based kinematic differences: Kinematics characteristic of females generally are resistant to inversion effects, while those of males drive systematic sex misperceptions . Implications of the findings are discussed.
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spelling doaj.art-5cebe740353946f58c612d517393f67d2022-12-21T17:59:34ZengSAGE Publishingi-Perception2041-66952014-04-01510.1068/i061210.1068_i0612Seeing the World Topsy-Turvy: The Primary Role of Kinematics in Biological Motion Inversion EffectsSue-Anne FitzgeraldAnna BrooksRick van der ZwanDuncan BlairPhysical inversion of whole or partial human body representations typically has catastrophic consequences on the observer's ability to perform visual processing tasks. Explanations usually focus on the effects of inversion on the visual system's ability to exploit configural or structural relationships, but more recently have also implicated motion or kinematic cue processing. Here, we systematically tested the role of both on perceptions of sex from upright and inverted point-light walkers. Our data suggest that inversion results in systematic degradations of the processing of kinematic cues. Specifically and intriguingly, they reveal sex-based kinematic differences: Kinematics characteristic of females generally are resistant to inversion effects, while those of males drive systematic sex misperceptions . Implications of the findings are discussed.https://doi.org/10.1068/i0612
spellingShingle Sue-Anne Fitzgerald
Anna Brooks
Rick van der Zwan
Duncan Blair
Seeing the World Topsy-Turvy: The Primary Role of Kinematics in Biological Motion Inversion Effects
i-Perception
title Seeing the World Topsy-Turvy: The Primary Role of Kinematics in Biological Motion Inversion Effects
title_full Seeing the World Topsy-Turvy: The Primary Role of Kinematics in Biological Motion Inversion Effects
title_fullStr Seeing the World Topsy-Turvy: The Primary Role of Kinematics in Biological Motion Inversion Effects
title_full_unstemmed Seeing the World Topsy-Turvy: The Primary Role of Kinematics in Biological Motion Inversion Effects
title_short Seeing the World Topsy-Turvy: The Primary Role of Kinematics in Biological Motion Inversion Effects
title_sort seeing the world topsy turvy the primary role of kinematics in biological motion inversion effects
url https://doi.org/10.1068/i0612
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