Biological motion elicits between-person Inhibition of Return in temporal and spatial movement parameters

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Kritikos, Ada
Chandler-Mather, Ned
Sparks, Samuel
Welsh, Timothy
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2022
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Abstract

The present study was designed to gain a deeper understanding of the processing of biological motion stimuli. To this end, we investigated if the inhibition of return (IoR) effect emerges in initiation times and trajectories of pointing movements to targets in left and right space where the preceding cues were pointing movement of a human model or a dot with the same biological motion. Targets were randomly presented in the same or opposite side from the direction of the motion cue. It was hypothesised that the visuomotor system should resonate with the biological motion of a dot, but that the human model should exaggerate the effect. Thus, the human model should trigger stronger attention shifts compared with the dot model and lead to more robust IoR effects in both spatial (movement) and temporal parameters of the observer's pointing responses. Initiation times and the spatial parameters (angle of the hand trajectory) of the pointing movements were analysed. Results indicate that facilitation and IoR effects triggered by human and dot stimuli did not differ. Based on these findings, it seems that the crucial feature of motion cues that generate shifts in attention is biological motion, rather than human appearance per se.

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Acta Psychologica

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230

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© 2022 The University of Queensland. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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Psychology

Applied and developmental psychology

Biological psychology

Cognitive and computational psychology

Social Sciences

Psychology, Experimental

Spatially directed actions

Inhibition of Return

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Kritikos, A; Chandler-Mather, N; Sparks, S; Welsh, T, Biological motion elicits between-person Inhibition of Return in temporal and spatial movement parameters, Acta Psychologica, 2022, 230, pp. 103747

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