Gutenberg Open Science: Effects of spatial frequency similarity and dissimilarity on contour integration

Please use this identifier to cite or link to this item: http://doi.org/10.25358/openscience-7342

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DC Field	Value	Language
dc.contributor.author	Persike, Malte	-
dc.contributor.author	Meinhardt, Günter	-
dc.date.accessioned	2022-07-11T09:49:27Z	-
dc.date.available	2022-07-11T09:49:27Z	-
dc.date.issued	2015
dc.identifier.uri	https://openscience.ub.uni-mainz.de/handle/20.500.12030/7356	-
dc.description.abstract	We examined the effects of spatial frequency similarity and dissimilarity on human contour integration under various conditions of uncertainty. Participants performed a temporal 2AFC contour detection task. Spatial frequency jitter up to 3.0 octaves was applied either to background elements, or to contour and background elements, or to none of both. Results converge on four major findings. (1) Contours defined by spatial frequency similarity alone are only scarcely visible, suggesting the absence of specialized cortical routines for shape detection based on spatial frequency similarity. (2) When orientation collinearity and spatial frequency similarity are combined along a contour, performance amplifies far beyond probability summation when compared to the fully heterogenous condition but only to a margin compatible with probability summation when compared to the fully homogenous case. (3) Psychometric functions are steeper but not shifted for homogenous contours in heterogenous backgrounds indicating an advantageous signal-to-noise ratio. The additional similarity cue therefore not so much improves contour detection performance but primarily reduces observer uncertainty about whether a potential candidate is a contour or just a false positive. (4) Contour integration is a broadband mechanism which is only moderately impaired by spatial frequency dissimilarity.	en_GB
dc.description.sponsorship	DFG, Open Access-Publizieren Universität Mainz / Universitätsmedizin	de
dc.language.iso	eng	de
dc.rights	CC0	*
dc.rights.uri	https://creativecommons.org/publicdomain/zero/1.0/	*
dc.subject.ddc	150 Psychologie	de_DE
dc.subject.ddc	150 Psychology	en_GB
dc.title	Effects of spatial frequency similarity and dissimilarity on contour integration	en_GB
dc.type	Zeitschriftenaufsatz	de
dc.identifier.doi	http://doi.org/10.25358/openscience-7342	-
jgu.type.dinitype	article	en_GB
jgu.type.version	Published version	de
jgu.type.resource	Text	de
jgu.organisation.department	FB 02 Sozialwiss., Medien u. Sport	de
jgu.organisation.number	7910	-
jgu.organisation.name	Johannes Gutenberg-Universität Mainz	-
jgu.rights.accessrights	openAccess	-
jgu.journal.title	PLoS one	de
jgu.journal.volume	10	de
jgu.journal.issue	6	de
jgu.pages.alternative	e0126449	de
jgu.publisher.year	2015	-
jgu.publisher.name	PLoS	de
jgu.publisher.place	Lawrence, Kan.	de
jgu.publisher.uri	http://dx.doi.org/10.1371/journal.pone.0126449	de
jgu.publisher.issn	1932-6203	de
jgu.organisation.place	Mainz	-
jgu.subject.ddccode	150	de
opus.date.modified	2018-09-05T09:11:48Z
opus.subject.dfgcode	00-000
opus.organisation.string	FB 02: Sozialwissenschaften, Medien und Sport: Psychologisches Institut	de_DE
opus.identifier.opusid	51965
opus.institute.number	0204
opus.metadataonly	false
opus.type.contenttype	Keine	de_DE
opus.type.contenttype	None	en_EN
opus.affiliated	Persike, Malte
opus.affiliated	Meinhardt, Günter
jgu.publisher.doi	10.1371/journal.pone.0126449	de
jgu.organisation.ror	https://ror.org/023b0x485
Appears in collections:	DFG-OA-Publizieren (2012 - 2017)

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