Differences in perceived durations between plausible biological and non-biological stimuli
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RESEARCH ARTICLE
Differences in perceived durations between plausible biological and non‑biological stimuli Giuliana Martinatti Giorjiani1,2 · Claudinei Eduardo Biazoli Jr.1 · Marcelo Salvador Caetano1,3 Received: 3 December 2019 / Accepted: 11 August 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Visual motion stimuli can sometimes distort our perception of time. This effect is dependent on the apparent speed of the moving stimulus, where faster stimuli are usually perceived lasting longer than slower stimuli. Although it has been shown that neural and cognitive processing of biological motion stimuli differ from non-biological motion stimuli, no study has yet investigated whether perceived durations of biological stimuli differ from non-biological stimuli across different speeds. Here, a prospective temporal reproduction task was used to assess that question. Biological motion stimuli consisted of a human silhouette running in place. Non-biological motion stimuli consisted of a rectangle moving in a pendular way. Amount and plausibility of movement for each stimulus and frame-rate (speed) were evaluated by an independent group of participants. Although the amount of movement perceived was positively correlated to frame rate both for biological and non-biological stimuli, movie clips involving biological motion stimuli were judged to last longer than non-biological motion stimuli only at frame rates for which movement was rated as plausible. These results suggest that plausible representations of biomechanical movement induce additional temporal distortions to those modulated by increases in stimulus speed. Moreover, most studies reporting neural and cognitive differences in the processing of biological and non-biological motion stimuli acquired neurophysiological data using fMRI. Here, we report differences in the processing of biological and non-biological motion stimuli across different speeds using functional near-infrared spectroscopy (fNIRS), a less costly and portable form of neurophysiological data acquisition. Keywords Timing · fNIRS · Movement · Biological motion
Introduction The perception of time is ubiquitous in nature and an important part of most human behaviors. From planning daily routines to executing specific motor responses, many activities Communicated by Francesca Frassinetti. Electronic supplementary material The online version of this article (https://doi.org/10.1007/s00221-020-05904-w) contains supplementary material, which is available to authorized users. * Giuliana Martinatti Giorjiani [email protected] 1
Centro de Matemática, Computação e Cognição, Universidade Federal do ABC, Santo André, Brazil
2
Proaction Lab ‑ Faculdade de Psicologia e de Ciências da Educação, Universidade de Coimbra, Coimbra, Portugal
3
Instituto Nacional de Ciência e Tecnologia Sobre Comportamento Cognição e Ensino, São Paulo, Brazil
can be summarized as a series of successive events in time. Despite our ability to perceive the passage of time and interac
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