Response-locked classification image analysis of perceptual decision making in contrast detection

Abstract In many situations, humans make decisions based on serially sampled information through the observation of visual stimuli. To quantify the critical information used by the observer in such dynamic decision making, we here applied a classification image (CI) analysis locked to the observer&#...

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Autores principales:	Hironori Maruyama, Natsuki Ueno, Isamu Motoyoshi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5656a99927f540d1b97709c7aaf47b34
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spelling	oai:doaj.org-article:5656a99927f540d1b97709c7aaf47b342021-12-05T12:11:46ZResponse-locked classification image analysis of perceptual decision making in contrast detection10.1038/s41598-021-02189-z2045-2322https://doaj.org/article/5656a99927f540d1b97709c7aaf47b342021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-02189-zhttps://doaj.org/toc/2045-2322Abstract In many situations, humans make decisions based on serially sampled information through the observation of visual stimuli. To quantify the critical information used by the observer in such dynamic decision making, we here applied a classification image (CI) analysis locked to the observer's reaction time (RT) in a simple detection task for a luminance target that gradually appeared in dynamic noise. We found that the response-locked CI shows a spatiotemporally biphasic weighting profile that peaked about 300 ms before the response, but this profile substantially varied depending on RT; positive weights dominated at short RTs and negative weights at long RTs. We show that these diverse results are explained by a simple perceptual decision mechanism that accumulates the output of the perceptual process as modelled by a spatiotemporal contrast detector. We discuss possible applications and the limitations of the response-locked CI analysis.Hironori MaruyamaNatsuki UenoIsamu MotoyoshiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hironori Maruyama Natsuki Ueno Isamu Motoyoshi Response-locked classification image analysis of perceptual decision making in contrast detection
description	Abstract In many situations, humans make decisions based on serially sampled information through the observation of visual stimuli. To quantify the critical information used by the observer in such dynamic decision making, we here applied a classification image (CI) analysis locked to the observer's reaction time (RT) in a simple detection task for a luminance target that gradually appeared in dynamic noise. We found that the response-locked CI shows a spatiotemporally biphasic weighting profile that peaked about 300 ms before the response, but this profile substantially varied depending on RT; positive weights dominated at short RTs and negative weights at long RTs. We show that these diverse results are explained by a simple perceptual decision mechanism that accumulates the output of the perceptual process as modelled by a spatiotemporal contrast detector. We discuss possible applications and the limitations of the response-locked CI analysis.
format	article
author	Hironori Maruyama Natsuki Ueno Isamu Motoyoshi
author_facet	Hironori Maruyama Natsuki Ueno Isamu Motoyoshi
author_sort	Hironori Maruyama
title	Response-locked classification image analysis of perceptual decision making in contrast detection
title_short	Response-locked classification image analysis of perceptual decision making in contrast detection
title_full	Response-locked classification image analysis of perceptual decision making in contrast detection
title_fullStr	Response-locked classification image analysis of perceptual decision making in contrast detection
title_full_unstemmed	Response-locked classification image analysis of perceptual decision making in contrast detection
title_sort	response-locked classification image analysis of perceptual decision making in contrast detection
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/5656a99927f540d1b97709c7aaf47b34
work_keys_str_mv	AT hironorimaruyama responselockedclassificationimageanalysisofperceptualdecisionmakingincontrastdetection AT natsukiueno responselockedclassificationimageanalysisofperceptualdecisionmakingincontrastdetection AT isamumotoyoshi responselockedclassificationimageanalysisofperceptualdecisionmakingincontrastdetection
_version_	1718372132879073280

Response-locked classification image analysis of perceptual decision making in contrast detection

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