Multifractality of posture modulates multisensory perception of stand-on-ability

Jonathan K Doyon, Alen Hajnal, Tyler Surber, Joseph D Clark and Damian G Kelty-Stephen

PLOS ONE, 2019, vol. 14, issue 2, 1-32

Abstract: By definition, perception is a multisensory process that unfolds in time as a complex sequence of exploratory activities of the organism. In such a system perception and action are integrated, and multiple energy arrays are available simultaneously. Perception of affordances interweaves sensory and motor activities into meaningful behavior given task constraints. The present contribution offers insight into the manner in which perception and action usher the organism through competent functional apprehension of its surroundings. We propose that the tensegrity structure of the body, manifested via multifractality of exploratory bodily movements informs perception of affordances. The affordance of stand-on-ability of ground surfaces served as the experimental paradigm. Observers viewed a surface set to a discrete angle and attempted to match it haptically with a continuously adjustable surface occluded by a curtain, or felt an occluded surface set to a discrete angle then matched it visually with a continuously adjustable visible surface. The complex intertwining of perception and action was demonstrated by the interactions of multifractality of postural sway with multiple energy arrays, responses, and changing geometric task demands.

Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0212220

DOI: 10.1371/journal.pone.0212220

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