How long depends on how fast--perceived flicker dilates subjective duration.

How do humans perceive the passage of time and the duration of events without a dedicated sensory system for timing? Previous studies have demonstrated that when a stimulus changes over time, its duration is subjectively dilated, indicating that duration judgments are based on the number of changes...

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Autores principales:	Sophie K Herbst, Amir Homayoun Javadi, Elke van der Meer, Niko A Busch
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5ac85c0730c24ea2995bef434324edea
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spelling	oai:doaj.org-article:5ac85c0730c24ea2995bef434324edea2021-11-18T08:49:53ZHow long depends on how fast--perceived flicker dilates subjective duration.1932-620310.1371/journal.pone.0076074https://doaj.org/article/5ac85c0730c24ea2995bef434324edea2013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24194829/?tool=EBIhttps://doaj.org/toc/1932-6203How do humans perceive the passage of time and the duration of events without a dedicated sensory system for timing? Previous studies have demonstrated that when a stimulus changes over time, its duration is subjectively dilated, indicating that duration judgments are based on the number of changes within an interval. In this study, we tested predictions derived from three different accounts describing the relation between a changing stimulus and its subjective duration as either based on (1) the objective rate of changes of the stimulus, (2) the perceived saliency of the changes, or (3) the neural energy expended in processing the stimulus. We used visual stimuli flickering at different frequencies (4-166 Hz) to study how the number of changes affects subjective duration. To this end, we assessed the subjective duration of these stimuli and measured participants' behavioral flicker fusion threshold (the highest frequency perceived as flicker), as well as their threshold for a frequency-specific neural response to the flicker using EEG. We found that only consciously perceived flicker dilated perceived duration, such that a 2 s long stimulus flickering at 4 Hz was perceived as lasting as long as a 2.7 s steady stimulus. This effect was most pronounced at the slowest flicker frequencies, at which participants reported the most consistent flicker perception. Flicker frequencies higher than the flicker fusion threshold did not affect perceived duration at all, even if they evoked a significant frequency-specific neural response. In sum, our findings indicate that time perception in the peri-second range is driven by the subjective saliency of the stimulus' temporal features rather than the objective rate of stimulus changes or the neural response to the changes.Sophie K HerbstAmir Homayoun JavadiElke van der MeerNiko A BuschPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 10, p e76074 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Sophie K Herbst Amir Homayoun Javadi Elke van der Meer Niko A Busch How long depends on how fast--perceived flicker dilates subjective duration.
description	How do humans perceive the passage of time and the duration of events without a dedicated sensory system for timing? Previous studies have demonstrated that when a stimulus changes over time, its duration is subjectively dilated, indicating that duration judgments are based on the number of changes within an interval. In this study, we tested predictions derived from three different accounts describing the relation between a changing stimulus and its subjective duration as either based on (1) the objective rate of changes of the stimulus, (2) the perceived saliency of the changes, or (3) the neural energy expended in processing the stimulus. We used visual stimuli flickering at different frequencies (4-166 Hz) to study how the number of changes affects subjective duration. To this end, we assessed the subjective duration of these stimuli and measured participants' behavioral flicker fusion threshold (the highest frequency perceived as flicker), as well as their threshold for a frequency-specific neural response to the flicker using EEG. We found that only consciously perceived flicker dilated perceived duration, such that a 2 s long stimulus flickering at 4 Hz was perceived as lasting as long as a 2.7 s steady stimulus. This effect was most pronounced at the slowest flicker frequencies, at which participants reported the most consistent flicker perception. Flicker frequencies higher than the flicker fusion threshold did not affect perceived duration at all, even if they evoked a significant frequency-specific neural response. In sum, our findings indicate that time perception in the peri-second range is driven by the subjective saliency of the stimulus' temporal features rather than the objective rate of stimulus changes or the neural response to the changes.
format	article
author	Sophie K Herbst Amir Homayoun Javadi Elke van der Meer Niko A Busch
author_facet	Sophie K Herbst Amir Homayoun Javadi Elke van der Meer Niko A Busch
author_sort	Sophie K Herbst
title	How long depends on how fast--perceived flicker dilates subjective duration.
title_short	How long depends on how fast--perceived flicker dilates subjective duration.
title_full	How long depends on how fast--perceived flicker dilates subjective duration.
title_fullStr	How long depends on how fast--perceived flicker dilates subjective duration.
title_full_unstemmed	How long depends on how fast--perceived flicker dilates subjective duration.
title_sort	how long depends on how fast--perceived flicker dilates subjective duration.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/5ac85c0730c24ea2995bef434324edea
work_keys_str_mv	AT sophiekherbst howlongdependsonhowfastperceivedflickerdilatessubjectiveduration AT amirhomayounjavadi howlongdependsonhowfastperceivedflickerdilatessubjectiveduration AT elkevandermeer howlongdependsonhowfastperceivedflickerdilatessubjectiveduration AT nikoabusch howlongdependsonhowfastperceivedflickerdilatessubjectiveduration
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How long depends on how fast--perceived flicker dilates subjective duration.

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